Trig Prove

**srirahulan** · April 26th 2012, 02:34 AM

(sin^(2)a-sin^(2)(b))/(sin(a)cos(a)-sin(b)cos(b))=tan(a+b)

**ignite** · April 26th 2012, 03:23 AM

Consider these identities:
$sin(a+b)sin(a-b)=sin^2a-sin^2b$
$sin(2a)=2sin(a)cos(a)$
$sin(2a)-sin(2b)=2cos(a+b)sin(a-b)$
Please try to prove these identities.
Using these your equation becomes:
$\frac{sin(a+b)sin(a-b)}{cos(a+b)sin(a-b)}=tan(a+b)$

**srirahulan** · April 27th 2012, 04:46 AM

Great!

Thread: Trig Prove

LinkBack

Thread Tools

Display

Trig Prove

Re: Trig Prove

Re: Trig Prove

Similar Math Help Forum Discussions

Prove trig identities Help !!

Prove the following Trig Identity

Prove this trig identity.

Prove Trig Identity

Prove Trig Identity

Search Tags