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Trigonometry

43m

Area of a Segment

Find the area of the segment of a circle whose radius is 5 inches, formed by a central angle of 40°.

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Trigonometry

45m

Finding the Length of a Guy Wires

A radio tower 500 feet high is located on the side of a hill with an inclination to the horizontal of 5°. How long should two guy wires be if they are connect to the top of the tower and be secured... more

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Calculus Precalculus Trigonometry

12h

Trigonometry Question

2sin^2 theta-3 sin theta+1=0

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Geometry Trigonometry Triangle

17h

In a 30-60 right triangle the side opposite the 30 degree angle is half the length of the hypotenuse. Why?

> In a 30-60 right triangle the side opposite the 30 degree angle is half the length of the hypotenuse. A statement from the trigonometry section of Simmons' *Precalculus in a nutshell*. Please... more

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Calculus Trigonometry

17h

How do you prove that the derivative of inverse tangent is 1x2+1?

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Calculus Geometry Trigonometry

18h

Do "other" trigonometric functions than Tan Sin Cos and their derivatives exist?

I remember my physics teacher mentioning that other trigonometric functions exist apart from the Sin Cos and Tan, he mentioned a few and they did not sound familiar, nothing like Sec Csc and Cot. I... more

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Trigonometry

21h

Using quaternion to determine pitch, yaw, and roll independently

I need to calculate pitch, yaw, and roll of a vector in 3D space for a video game I am programming. However, the complication is that I need to calculate these angles individually. For example, I... more

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Math Trigonometry

23h

Find sin(2x), cos(2x), and tan(2x) from the given information. sin(x) = −8/17 , x in Quadrant III

I need help on my homework

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Trigonometry

1d

sec^2x+tanx=1 :)

need help solving thisss

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Trigonometry

1d

Given that Sec= 13/12 and x is in Q1, find sin x/2

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Trigonometry

1d

what are the lengths of the right triangle?

A right triangle has side lengths 7, 24, and 25 as shown below.Use these lengths to find tanB, sinB, and cosB.

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Trigonometry

2d

A car's wheels are 36 in. in diameter. How far (in mi) will the car travel if its wheels revolve 10,000 times without slipping? (Round your answer to two decimal places).

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Trigonometry Mathematics

2d

Find the distance between the fisherman's home port and Forrest Island.

A fisherman leaves his home port and heads in the direction N 70° W. He travels d1 = 35 mi and reaches Egg Island. The next day he sails N 10° E for d2 = 55 mi, reaching Forrest Island.(a) Find the... more

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Trigonometry

2d

how do you simplify 1/(1-cosx)-1/sin2x?

How do you simplify:1/(1-cosx) - 1/sin2x?

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Calculus Trigonometry Conic Sections

3d

Aunt and Uncle's fuel oil tank dip stick problem?

This problem first came to me in high school, and a couple times since, and I even assigned it for extra credit in one of my calculus classes after I became a teacher. So I know the solution. What... more

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Geometry Trigonometry

3d

Calculate point, given x, y, angle, and distance?

Excuse my ignorance and use of incorrect terms, but... I have x and y coordinates, and the angle that the entity is facing on a 2D plane. I want to find the correct point, say 5 units in front of... more

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Calculus Trigonometry

3d

Is there a formula for $\\sin(xy)$?

Can we express a trigonometric function for the product of two angles as a function of trigonometric functions of its factors? For example: Is there a formula for $\\sin(xy)$ as a function of... more

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Trigonometry

3d

Trigonometry equation

sinx - cosx = 3/4 hence solve sinxcosx

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Geometry Trigonometry Triangle

3d

A triangle determinant that is always zero?

How do we prove, without actually expanding, that $$\\begin{vmatrix} \\sin {2A}& \\sin {C}& \\sin {B}\\\\ \\sin{C}& \\sin{2B}& \\sin {A}\\\\ \\sin{B}& \\sin{A}&... more

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Calculus Trigonometry

3d

Intuitive understanding of the derivatives of $\\sin x$ and $\\cos x$?

One of the first things ever taught in a differential calculus class: - The derivative of $\\sin x$ is $\\cos x$. - The derivative of $\\cos x$ is $-\\sin x$. This leads to a rather neat (and... more

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Calculus Trigonometry

3d

How would you prove this, n!!=2n2+14(1−cos(πn))×π 14(cos(πn)−1)Γ(n2+1)?

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Geometry Trigonometry Triangle

3d

How to find area of triangle from its medians?

The length of three medians of a triangle are $9$,$12$ and $15$cm.The area (in sq. cm) of the triangle is a) $48$ b) $144$ c) $24$ d) $72$ I don't want whole solution just give me the hint how... more

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Geometry Trigonometry Pi

3d

Why are turns not used as the default angle measure?

Why is $2\\pi$ radians not replaced by $1$ turn in formulas? The majority of them would be simpler. If such a replacement was proposed earlier, why was it declined?

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Calculus Trigonometry Inequality

3d

Variation on Pythagoras: If $a^2 + b^2 = c^2$, then $a + b \\leq c\\sqrt{2}$?

This is a very interesting word problem that I came across in an old textbook of mine. So I know its got something to do with derivative of the Pythagorean Theorem using calculus, trigonometry,... more

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Geometry Trigonometry Triangle

3d

Does a triangle always have a point where each side subtends equal 120° angles?

Is there a point $O$ inside a triangle $\ riangle ABC$ (any triangle) such that the angle $\\angle{AOB} = \\angle{BOC} = \\angle{AOC}$? What do we call this point?

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trigonometry

Area of a Segment

Finding the Length of a Guy Wires

Trigonometry Question

In a 30-60 right triangle the side opposite the 30 degree angle is half the length of the hypotenuse. Why?

How do you prove that the derivative of inverse tangent is 1x2+1?

Do "other" trigonometric functions than Tan Sin Cos and their derivatives exist?

Using quaternion to determine pitch, yaw, and roll independently

Find sin(2x), cos(2x), and tan(2x) from the given information. sin(x) = −8/17 , x in Quadrant III

sec^2x+tanx=1 :)

Given that Sec= 13/12 and x is in Q1, find sin x/2

what are the lengths of the right triangle?

A car's wheels are 36 in. in diameter. How far (in mi) will the car travel if its wheels revolve 10,000 times without slipping? (Round your answer to two decimal places).

Find the distance between the fisherman's home port and Forrest Island.

how do you simplify 1/(1-cosx)-1/sin2x?

Aunt and Uncle's fuel oil tank dip stick problem?

Calculate point, given x, y, angle, and distance?

Is there a formula for $\\sin(xy)$?

Trigonometry equation

A triangle determinant that is always zero?

Intuitive understanding of the derivatives of $\\sin x$ and $\\cos x$?

How would you prove this, n!!=2n2+14(1−cos(πn))×π 14(cos(πn)−1)Γ(n2+1)?

How to find area of triangle from its medians?

Why are turns not used as the default angle measure?

Variation on Pythagoras: If $a^2 + b^2 = c^2$, then $a + b \\leq c\\sqrt{2}$?

Does a triangle always have a point where each side subtends equal 120° angles?

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