9,261 Answered Questions for the topic trigonometry

Trigonometry Math Trig Mathematics

04/25/22

Rewrite the complex number 8 ( cos 2.5 + i sin 2.5 ) in a + b i form
My struggle has been that I cannot understand how to find the exact value of cos and sin and the decimal I get from my calculator doesn't register as correct when I punch it in. If you could also... more
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Trigonometry

04/24/22

Complete the following simplification.
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Trigonometry Precalculus

04/24/22

Show all steps to prove the following identity
Sin 2x(tan x + cot x)= 2
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Trigonometry Precalculus

04/24/22

Solve the Following equation on the interval [0,2pi].
Cos x + 0.75=0Provide an approximate answer to two decimal places.
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04/23/22

maclaurin series
Find the first three nonzero terms in the Maclaurin series of f(x)= tan x.
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04/23/22

Are there power series which diverge everywhere? If so, exhibit one. If not explain why it cannot happen.
Are there power series which diverge everywhere? If so, exhibit one. If not explain why it cannothappen.
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04/23/22

internal of convergence of a power series
Determine the interval of convergence of the power series which is the sum from n=0 to infinityof the terms an=[n(x+2)n]/(3n+1)
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04/23/22

Do you consider that absolute or conditional convergence is the stronger, more useful form of convergence? Explain.
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Trigonometry Calculus Linear Algebra

04/23/22

Alternating Series Theorem
Use the Alternating Series Theorem to prove that the series which is the sum from n=0 toinfinity of an=(-1)n/n! converges
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Trigonometry Calculus Algebra

04/23/22

Use the Ratio Test to discuss the convergence or divergence of a series
Use the Ratio Test to discuss the convergence or divergence of the series which is the sum fromn=1 to infinity of the terms an=[(-1)n][n3]/3n
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Trigonometry Calculus Algebra

04/23/22

integral test on a series of numbers.
Prove that you can use the integral test on the series which is the sum from n=1 to infinity of theterms an= ln(n)/n. Then use the test to establish the convergence or divergence of the... more
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Trigonometry

04/23/22

Express 4.3 sin ( x ) − 1.1 cos ( x ) in the form k sin ( x + ϕ ) k = ϕ = Note: ϕ should be given in radians in the interval − π < ϕ < π Report answers accurate to 4 decimal places.
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Trigonometry

04/23/22

Rewrite − 3 sin ( x ) + 4 cos ( x ) as A sin ( x + ϕ ) A = ϕ = Note: ϕ should be in the interval − π < ϕ < π
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Trigonometry

04/22/22

Suppose cos 2A = − (2/3) , and 2A is an angle in the Third Quadrant. Then cos A =

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Trigonometry

04/22/22

Suppose sin 2A = √51/10, and 2A is an angle in the Second Quadrant. (Assume 0 < 2 A < 360 ) Then sin A =

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Trigonometry

04/22/22

If tanθ = 8/3 and cot ϕ = 5 /4, with θ and ϕ in the first quadrant, find the exact value of sin ( θ + ϕ ). Note: Be sure to enter EXACT values sin ( θ + ϕ ) =

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Trigonometry

04/20/22

Reduce the equation to a single cosine function with positive amptitude

3cos(8pi*x)-8sin(8pi*x)-3cos(8pi*x)-8sin(8pi*x)8sin(8pi*x)-3cos(8pi*x)3cos(8pi*x)+8sin(8pi*x)
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Trigonometry Math Geometry

04/20/22

Just would like to know the answer to this question.
What conjecture can you make about the tangent of complementary angles?
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Trigonometry Math High School Math

04/20/22

Proving Trig Identities
So, I've been learning proofs since I was in about 8th grade math. But I can't grasp it no matter how many times its explained to me. Its one of those things that makes sense when someone else does... more
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Trigonometry

04/20/22

From the top of a 25-m tower, you have observed a stop sign that is 10 m away from the base of the tower. What is the angle of depression of the stop sign?
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Trigonometry Precalculus Pre Calculus

04/20/22

Pre calculus magnitudes and vectors

Write the vector with magnitude 7 and direction 300° in rectangular form
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04/20/22

Give the rectangular coordinates for each of the following polar coordinates

(1/2,π/4) = ?(π,π)
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Trigonometry Calculus Precalculus

04/20/22

Give the polar coordinate for each of the following rectangular coordinates

(1,2) = (sqrt5,?)(-24,13) = (27.295,?)if you could work out the problems as well because im able to get the x coordinate, just not the y
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Trigonometry Math Precalculus

04/19/22

Write as a single sine function
Which of the following expressions can be written as a single sine function of the form Asin(Bt+θ)? More than one answer can be right.a.) 3sin(2t) + 5cos(2t)b.) cos(pit) c.) 2sin(3t) + 3cos(2t)d.)... more
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Trigonometry Math Precalculus

04/19/22

Find exactly all solutions to the given equation
Fine exactly all solutions to the give equation: 2cos^2θ = 3sinθ + 3, 0 ≤ θ ≤ 2pi
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