121 Answered Questions for the topic Sine

12/07/20

#### Pre Calculus Question

Given đ đđđ = â1 and đđđ đ > 0, find (a) đ đđ2đ, and (b) đđđ 2đ

08/30/20

#### I need help figuring out how to solve this

A gasoline and air mixture is ignited by spark plugs, which forces the pistons to move up and down, rotating the crankshaft. The animation on the left shows a single piston moving up and... more

05/18/20

#### Law of sines and cosines

Find b, given a=10 , c=8 and m<B=40o

05/18/20

#### Law of sines and cosines

In Triangle ABC, m<A=30o , m<B=80o , a=18in. Find the length of C.

05/15/20

#### Given cos(t)=-7/25 for pi/2 < t < pi, find the value of sin (t)

I appreciate all of the tutors and experts on here, thanks so much for saving me and many other students.

04/04/20

#### are sine and cosine equal for non-acute complementary angles?

for example, when writing a proof, is it logical to write the following:cos(-Ă¸)=sin(Ď/2+Ă¸) (âľ the cosine of an angle is equal to the sine of its complementary angle)I ask because this... more

03/18/20

#### Trignometric Functions

Find the value of each trigonometric function using the given angle and a calculator. Round answers to three decimal places.Cos 77Â Â°

12/04/19

#### Given Cos (2x)= -24/25, 2nd Quadrant (pi/2 <x< pi); What is Sin(x) ?

Am I missing something big here? I've gotten around to making sin(2x)=7/25 but I don't understand how to go from double angle to single angle using identities.

11/26/19

#### Consider the work below for verifying the given identities. One step in each identity is missing. Fill in the box showing the correct work for the missing step

First StepcotÂ Î¸ secÂ Î¸ csc2Â Î¸ - cot3Â Î¸ secÂ Î¸ = csc Â Î¸Second Step (missing step)Third StepcotÂ Î¸ secÂ Î¸ (1) = cscÂ Î¸Fourth StepcosÂ Î¸ 1------- * ------ = cscÂ Î¸sinÂ Î¸... more

11/26/19

#### If sinx cosx = 2/5 and tan x = 1/2, then sin^2x =

If sinx cosx = 2/5 and tan x = 1/2, then sin2 x= A. 1/5 B. 2/5 C. sqrt(5)/5 D. 2sqrt(5)/5 E. 3/5

07/09/19

#### Write â6sin(8t)+5cos(8t) in the form Asin(Bt+Ď) using sum or difference formulas.

-6sin(8t)+5cos(8t)= Please provide all steps! Thank You!

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?

07/08/19

#### Sine and Cosine

Why can sine and cosine never be greater thanÂ 1?Â

07/08/19

#### Sine Cosine and Tangent

Why can sine and cosine never be greater thanÂ 1? Why is it that cosecant and secant should be greater thanÂ 1? Why are tangent and cotangent sometimes undefined?

07/07/19

#### If sinx+cosx=sqrt(2)sin(x+AĎ), then the number 0<A=___________ <2

please provide all steps for the solution

07/02/19

#### Express in terms of x: sin(2arctan(x))

PLEASE give clear steps! Thank You!If the answers ends up having square roots, can you simply it where it does not

07/02/19

#### Find tan(arcsin(4/6) + arccos(10/17))

PLEASE show clear steps!!If the answers ends up having square roots, can you simply it where it does not

03/22/19

#### Triangle Area in sine

The perimeter of a triangle ABC is L metres. Find the area of the triangle in terms of L and the triangleâs angles Îą, Î˛ and Îł.(Let AB=x. Using the sine rule, first find the other side lengths in... more

01/11/19

#### Trigonometry Question!

A weather ballon is tethered to the ground at an angle of inclination equal to 30Â°. The string used is 400ft long. Caleb and Elissa are at different positions on level ground in line with the... more

07/17/18

#### How do I use sin, cos, tan, and their inverse functions to find missing values?

I feel rather silly asking this question on here, but I have been looking up videos on how to do the trig functions sin, cos, tan, and their inverse functions and still cannot understand. I was... more

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