Thursday

November 20, 2014

November 20, 2014

Posted by **Anonymous** on Monday, May 7, 2012 at 8:01pm.

(1-2Sin^2 X)^2 + 4sin^2 X Cos^2 X

I'm not sure how to start this or which identities to use. Any suggestions?

- Trig -
**Reiny**, Monday, May 7, 2012 at 8:19pm(1-2Sin^2 X)^2 + 4sin^2 X Cos^2 X

(sin^2 x + cos^2 x - 2sin^2 x)^2 + (2sinxcosx)^2

= (cos^2x - sin^2x)^2 + (sin 2x)^2

= (cos 2x)^2 + (sin 2x)^2

= 1

**Answer this Question**

**Related Questions**

trig - 2sin(4x)[(cos(3/2)x)(cos(5x/2)-sin((15/4)x)]+x can someone simplify this ...

trig 26 - simplify to a constant or trig func. 1. sec u-tan u/cos v+sin v ...

trig - 2sin(x)cos(x)+cos(x)=0 I'm looking for exact value solutions in [0, 3&#...

Trigonometry - Solve. 2sin(2) + 3 = 0 interval [0, 2) How do I start this...

Precal - I do not understand how to do this problem ((sin^3 A + cos^3 A)/(sin A...

math - how would you find the angle to (3)^.5sin(2x)-2cos(2x)+2sin^2(x)=1 I know...

trig - I need to find all solutions of the given equations for the indicated ...

Precalculus - Verify the identities. Cos^2x - sin^2x = 2cos^2x - 1 When ...

Math(Please check) - Use the fundamental identities to simplify the expression. ...

algebra - why cant we simplify 3x2+4x any further. If you were to incorrectly ...