Friday

August 29, 2014

August 29, 2014

Posted by **Sam** on Wednesday, November 6, 2013 at 5:21pm.

I tried drawing perpendiculars and stuff but it doesn't seem to work?

For me, the trig identities don't seem to plug in as well.

Help is appreciated, thanks.

- Math-Trigonometry -
**Steve**, Wednesday, November 6, 2013 at 7:27pmC = 180-(A+B), so

tan C = -tan(A+B) = (tanA+tanB)/(tanAtanB-1)

tanA+tanB+tanC

= tanA+tanB + (tanA+tanB)/(tanAtanB-1)

= (tanA+tanB)(1 + 1/(tanAtanB-1))

= (tanA+tanB)(tanAtanB)/(tanAtanB-1)

= (tanAtanB)(tanA+tanB)/(tanAtanB-1)

= tanAtanBtanC

- Math-Trigonometry -
**Sam**, Thursday, November 7, 2013 at 10:09amThanks a ton!

**Related Questions**

Trigonometry (Math) - Can someone help me simplify this equation? It needs to be...

TRIGONOMETRY - Can someone please show me step by step how to calculate the ...

trigonometry - how can i find the anti-logarithm of this number. 5.07843058944 ...

Trigonometry - Find the domain of each function. And show your steps please. f(x...

Trigonometry - The expression 2x^3(4-3x)-5x(x-2) is equal to? *Please show me ...

Trigonometry - The expression 2x^3(4-3x)-5x(x-2) is equal to? *Please show me ...

Trigonometry - The expression 2x^3(4-3x)-5x(x-2) is equal to? *Please show me ...

trigonometry - this question confused me can you please show me how its done. ...

trigonometry - show that sin 2theta/1-cos 2 theta = cot theta

Trigonometry - Show that cos M(1/cosM-cosM) is equal to sin^2M