Saturday

August 23, 2014

August 23, 2014

Posted by **Carry** on Monday, February 23, 2009 at 8:42pm.

= 2 [sin(6x)]²

= 2[1 - cos(12x)]/2

= 1 - cos(12x)

- Trig check my work please? -
**Reiny**, Monday, February 23, 2009 at 9:02pmgood job

I usually pick some angle, say x = 21,

and sub it into the original, and the final.

of course they have to be the same.

This does of course not "prove" your answer is right, but the probability that you would get the same result if you had an error would be "very small"

Of course if you don't get the same result, then you know you are wrong.

**Related Questions**

TRIG! - Posted by hayden on Monday, February 23, 2009 at 4:05pm. sin^6 x + cos^6...

Mathematics - Trigonometric Identities - Let y represent theta Prove: 1 + 1/tan^...

tigonometry - expres the following as sums and differences of sines or cosines ...

trig - Reduce the following to the sine or cosine of one angle: (i) sin145*cos75...

algebra - Can someone please help me do this problem? That would be great! ...

Math - Calculus - The identity below is significant because it relates 3 ...

math - Can you please check my work. A particle is moving with the given data. ...

Trig - Given: cos u = 3/5; 0 < u < pi/2 cos v = 5/13; 3pi/2 < v < ...

Calculus 12th grade (double check my work please) - 1.)Find dy/dx when y= Ln (...

trig - The expression 4 sin x cos x is equivalent to which of the following? (...