Wednesday

March 4, 2015

March 4, 2015

Posted by **Stumped Student** on Saturday, September 22, 2007 at 9:38pm.

Note: Give exact answers, do not use decimal numbers. The answer should be a fraction or an arithmetic expression.

a) cos (2t)

b) sin (2t)

c) cos(1/2)

d) sin (1/2)

i dont even know what this question is asking me to find!

- CALCULUS -
**bobpursley**, Sunday, September 23, 2007 at 5:03amI will do one for you. It is asking you to apply the double and half angle formulas.

Cos2t=sin^t -cos^2 t

Now do you know how to get the sint, given cost?

Use pythoregean theorm.

**Answer this Question**

**Related Questions**

Math (Pre-Calc) - If any body could help me figure out these problems. I would ...

Math - Solve the given equation in the interval [0,2 pi]. Note: The answer must ...

Math - Use inverse trigonometric functions to find a solution to the equation in...

Math(Correction) - Use the given function values and trigonometric identities (...

TRIGONOMETRY - Write the following trigonometric expression as an algebraic ...

Trigonometry - Find all solutions between 0 and 2pi. Round to two decimal places...

Math - 1. Write the place name for the 4 in the following number: 3,624,786 ...

TRIG/ALGEBRA - 1) Find the exact value. Use a sum or difference identity. tan (-...

tRiG/ AlGeBrA - 1) Use double-angle identities to write the following expression...

MATH - 1.)Find the exact solution algebriacally, if possible: (PLEASE SHOW ALL ...