Wednesday

July 23, 2014

July 23, 2014

Posted by **Steve** on Sunday, March 31, 2013 at 3:28pm.

Is it 2sin(theta)cos(theta)?

- math -
**Steve**, Sunday, March 31, 2013 at 3:35pmyes,

sin 2x = 2 sinx cosx

cos 2x = cos^2 x - sin^2 x

**Related Questions**

Mathamatics - Solve the following trigonometry identities. a) 1-cos2(theta) = ...

Calculus - I wanted to confirm that I solved these problems correctly (we had to...

Physics - An object is shot at 20m/s at an angle theta. The object lands 24m ...

trig - If sin theta is equal to 5/13 and theta is an angle in quadrant II find ...

Algebra II - Multiple Choice Which expression is NOT equivalent to 1? (theta) ...

Mathematics - 1. Show that Sin3 Theta - Cos2 Theta = (1 - Sin Theta)(4Sin^2 ...

Precalculus(NEED HELP ASAP PLEASE!!) - cot(theta)= 3 pi < theta < 3pi/2 ...

Precalculus check answers help! - 1.) Find an expression equivalent to sec theta...

Precalculus check answers help! - 1.) Find an expression equivalent to sec theta...

Trig - Which expression equivalent to: cos(theta + pi/2). A)cos theta B)-cos ...