9,261 Answered Questions for the topic trigonometry

Trigonometry

11/16/21

given a complex number in the complex plane: -16+12i, write it in polar form
Help, please and thank you!
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Trigonometry Trig

11/16/21

Verify: (1+cos(2theta))/(sin(2theta)) = cot(theta)
I could not get them to equal each other, but I may have been going about it the wrong way
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Trigonometry Trig

11/16/21

Find magnitude and angle for v=(sqrt3 , -1) with theta between 0 and 2pi
I came up with a ||v|| of 2 and theta = -1/sqrt3, can someone verify for me? Thanks!
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Trigonometry Trig

11/16/21

Find the exact polar coordinates of the points of intersection of these polar equations: r=8sin(theta) and r=4csc(theta)
When I plot it on a graph I can see the points of intersection at (-4,4) and (4,4), But I can not seem to figure out how to solve this by hand.
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11/16/21

What is P(Ο€+ΞΈ) if (-8,15) lies on the terminal side of ΞΈ?
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Trigonometry Trig

11/16/21

Create a sine function in theta with an amplitude 1/3 , period pi/4 , and phase shift -pi/3
I came up with y=(1/3)sin(((2pi)/8)x - pi/3) . Could someone verify for me? thank you!
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Trigonometry Trig

11/16/21

Find the exact value of cos(theta) if tan(theta)=-16/63 and theta is between 90 and 180 degrees
I came up with -63/65. Is this correct? Thanks!
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Trigonometry Trig

11/16/21

If sin(theta)=-12/37 and theta is between pi and 3pi/2, find the exact value of sin(2theta)
What are the steps that I would take to solve this? I've been trying to come up with a conversion for a while and I am so lost!
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Trigonometry Trig

11/16/21

solve for theta: 2cos(theta) + 2sin(theta) = sqrt6 with theta between 0 and 2pi
How do I solve this algebraically? Thanks!
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Trigonometry Trig

11/16/21

Verify: (tan(theta)sinsquared(theta))/1+cos(theta) = tan(theta) - sin(theta)
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Trigonometry Maths

11/15/21

6cos^2x + sinx = 4
ended up with sinx (6sinx -1)=2
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Trigonometry

11/15/21

Use the dot product to find the value of the scalar, given that...

Use the dot product to find the value of the scalar, given that 𝑣⃗ =4𝑖⃗+𝑗⃗ and 𝑀⃗ =3π‘–βƒ—βˆ’8𝑗⃗. 2(π‘£βƒ—βˆ™π‘€βƒ—)Hello! I need help with solving this whole problem, please :)
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Trigonometry

11/15/21

A wagon is being pulled along level ground by exerting a force of...
A wagon is being pulled along the level ground by exerting a force of 50 pounds on a handle that makes an angle of 28Β° with the horizontal. How much work, to the nearest foot-pound, is done by... more
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Trigonometry

11/15/21

Given 𝑣⃗ =π‘–βƒ—βˆ’5𝑗⃗ and 𝑀⃗ =2𝑖⃗+3𝑗⃗, find
Given 𝑣⃗ =π‘–βƒ—βˆ’5𝑗⃗ and 𝑀⃗ =2𝑖⃗+3𝑗⃗, finda.) 𝑣⃗+𝑀⃗b.) ‖𝑣⃗+𝑀⃗‖ Hello! I need some assistance with how to solve these two parts, please :)
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Trigonometry

11/15/21

Let 𝑣⃗ be the vector from initial point 𝑃 to terminal point 𝑄.

Let 𝑣⃗ be the vector from initial point 𝑃 to terminal point 𝑄. 𝑃(7,βˆ’2) and 𝑄(6,3)a.) Write 𝑣⃗ in terms of 𝑖⃗ and 𝑗⃗.b.) Find the unit vector that has the same direction as vector 𝑣⃗.Hello!... more
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Trigonometry

11/15/21

Two fire-lookout stations are 30 miles apart, with station B directly east of station A.
Two fire-lookout stations are 30 miles apart, with station B directly east of station A. Both stations spot a fire on a mountain to the north. The bearing from station A to the fire is 𝑁 28Β° 𝐸. The... more
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Trigonometry

11/15/21

Given △𝐴𝐡𝐢 with π‘Ž =4, 𝑏 =8 and 𝑐 =11, find ∠𝐴. Round your answer to the nearest whole number.
Given △𝐴𝐡𝐢 with π‘Ž =4, 𝑏 =8 and 𝑐 =11, find ∠𝐴. Round your answer to the nearest whole number.Hello! I need help solving this problem, please!
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Trigonometry

11/15/21

Given △𝐴𝐡𝐢 with 𝐴=59Β°, π‘Ž =22 and 𝑏 =14 ...
Given △𝐴𝐡𝐢 with 𝐴=59Β°, π‘Ž =22 and 𝑏 =14, determine whether the given measurements produce one triangle, two triangles or no triangle at all. If no triangle is possible, state this. If one triangle... more
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Trigonometry

11/15/21

Hello! Pls help with this!
Given △𝐴𝐡𝐢 with 𝐴=127Β°, 𝑏 =6 and 𝑐 =9, find π‘Ž. Round your answer to the nearest tenth.
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Trigonometry

11/15/21

Given △𝐴𝐡𝐢 with 𝐴=32Β°, 𝐢 =55Β° and 𝑏 =27, find π‘Ž. Round your answer to the nearest tenth.
Given △𝐴𝐡𝐢 with 𝐴=32Β°, 𝐢 =55Β° and 𝑏 =27, find π‘Ž. Round your answer to the nearest tenth.
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Trigonometry Math Sat Math

11/15/21

Find the trigonometric point
Find the trig point of (pi/3 - theta). If P(theta)= (r,s).
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Trigonometry Math Help

11/15/21

trig question pls help
find the solution set of sin2(4x)+5cos2(2X)-2=0 given the interval [0,2pi]Use only trigonometric identities.
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Trigonometry Mathematics Help

11/15/21

trig question pls help
Find the trig point of (pi/3 - theta). If P(theta)= (r,s).
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Trigonometry

11/15/21

NEED HELP ASAP: given that tan(ΞΈ)=-2/3 and cos(ΞΈ)>0, find cos(ΞΈ) and csc(ΞΈ). don't use trigonometric identities.
Please include a picture of the angle and labeled
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Trigonometry

11/15/21

Write the following in terms of sinx only:
(secx + cscx) / (1 + tanx)
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