622 Answered Questions for the topic Trig

09/21/19

Vertical Translations! Need Help Quickly. I have a test tomorrow and I still can't figure out how to do these.

Find a cosine equation having the following characteristics:amplitude= 5period= 2pi/3horizontal shift= -pi/6vertical shift= 2Please explain how you figured out how to solve the problem! Thank you... more
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09/21/19

Vertical Translations! Please help!
A cosine function has an amplitidue of 1/3, a period of pi/3, horizontal shift of -2pi, and a vertical shift of -3. What is the y-value of the negative function when x=pi?
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09/10/19

Trigonometry- Prove that triangle ABF is similar to triangle DEF.
1)Prove that triangle ABF is similar to triangle DEF. Please ensure you follow proper proof form.2)Find the lengths of sides a and b in triangle ABF from question #1.
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09/08/19

Show that the determinant of | Row1: cosx cosz 1; Row 2: cosy 1 cosz; Row 3: 1 cosy cosx | = 0 when x + y + z = 2 pi
Show that the determinant of | cosx cosz 1 || cosy 1 cosz || 1 cosy cosx | is = 0 when x + y + z = 2 pi
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07/25/19

How to find (-2+2i)^16 using DeMoivre's Theorem?
Answer is suppose to be: 2^24 Cis(0) but I got some crazy: 16777216 cis (2160) So, I'm messing up somewhere while trying to find theta. Since 2^24 is same as 16777216.
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07/25/19

How to solve the following equations for theta if theta is between 0 and 360°: sin(3θ-45) = - √(3) / (2)
1) sin(3θ-45) = - √(3) / (2)Answer for this is suppose to be: θ = 95, 115, 215, 235, 335, 355 degree. I know how to get 115 and 95 but don't know how they got the others2) Cos 3θ = -1/2Answer for... more
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07/09/19

Write −6sin(8t)+5cos(8t) in the form Asin(Bt+ϕ) using sum or difference formulas.
-6sin(8t)+5cos(8t)= Please provide all steps! Thank You!
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07/09/19

If cos^2sin^4x= A+Bcos2x+Ccos4x+Dcos2xcos4x, then A= B= C= D=
Please tell me how you got it by showing steps!! what does A, B, C, and D equal in the second equation?
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07/07/19

Finding values of trigonometric functions given information about an angle: Problem type 1
Let (-8,-6) be a point on the terminal side of θ.Find the exact values of sinθ, cscθ, and cotθ
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06/27/19

If Tan^2(t)-Sin^2(t)=Sin^a(t)/Cos^b(t), then the positive power a= ALSO the positive power b=
So, I know the first two stepssin^2(t)/cos^2(t) -sin^2(t)sin^2(t)-sin^2(t)cos^2(t)/(cos^2(t)I have no idea what to do after this? I looked and it said to factor but I have no idea why you factor... more
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06/23/19

Use a​ sum-to-product identity to rewrite the expression.

cos (8t2) - cos (5t2)a. -2 sin (6.5t2) sin (1.5t2)b. -2 cos (6.5t2) cos (1.5t2)c. -2 sin (6.5t2) cos (1.5t2)d. -2 cos (6.5t2) sin (1.5t2)
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06/23/19

Use a​ product-to-sum identity to rewrite the expression.
sin 5t cos 2ta. 0.5(sin 7t - sin 3t)b. 0.5(cos 7t - cos 3t)c. 0.5(sin 7t + sin 3t)d. 0.5(cos 7t + sin 7t)
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06/23/19

Express cos 4 x in terms of cos x.
a. cos3x - 3 sin2 x cos xb. 2 sin x cos3x - 4 sin3x cos xc. cos4x - 6 sin2x cos2x + sin4xd. 3 sin x - 4 sin3x
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06/23/19

Use a ​half-number identity to find an exact value for the​ function, given the information about x.
sin x/2 , given sin x = -3/5 , with 3π/2 < x < 2πa. -√30 /10b. √10 /10c. √5 /5d. -√5 /5
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06/23/19

Use the given information to find the exact value
cos A=(1/3), 0 < A < (π/2); sin B = - (1/2), (πi/2) < B < 2π,Find sin (A-B)a. 2 √6 + 1 / 6b. √3 + 2 √2 / 6c. √3 - 2 √2 / 6d. 2 √6 - 1 / 6
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06/23/19

Complete the table

sin theta - ?cos theta- 1/cos thetatan theta- ?cot theta- ?sec theta- sec thetacsc theta- ?
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06/23/19

Complete the sentence so the result is an identity. Let x be any real number
-1=tan2xa. sec2xb. sin2xc. cot2xd. cos2x
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06/06/19

u are laying on the ground looking up at the sun that appears just over the top of a tree at an angle of elevation of 27°. He is located 32 feet away from the base of the tree. How tall is the tree?

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Trig

06/04/19

6ft ladder is against wall males angle of 71° with ground how high up the wall will it reach
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04/29/19

What number completes the Pythagorean triplet? X, 144,156
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04/14/19

Horizontal Height in a Circle in terms of Time
Background: a Ferris Wheel has a diameter of 135 feet and a maximum height of 150 feet. Its ride duration is 10 minutes and it makes two complete rotations in this time. Assume that at time t = 0,... more
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03/26/19

Trigonometry problem
Suppose you are solving a trigonometric equation for solutions over the interval [0,2π)​, and your work leads to 2x = 2π/3, 2π, 8π/3. What are the corresponding values of​ x?
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03/22/19

Trigonometry Question
2sin^2 theta-3 sin theta+1=0
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03/11/19

A ship sails 300km on a bearing of 078 how far north has the ship sailed
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02/22/19

the legs of a right trianle measure 5 inches and 7 units. If θ is the angle between the 7-inch leg and the hypotenuse, sinθ=______.
This question is a trig question, I hope you help me. I dont understand this question and would appreciate the help.Thanks :)
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