Tuesday

October 21, 2014

October 21, 2014

Posted by **Raeven** on Friday, October 12, 2012 at 12:17pm.

tan(-x)cosx

- PreCal -
**Steve**, Friday, October 12, 2012 at 3:38pmtan(-x) cosx = -tanx cosx = -sinx/cos^2(x)

not sure that's much simplified

**Answer this Question**

**Related Questions**

math - need an aswer quich ok thiers two the find sin(2pi/3 -pi/4) using sum and...

precal - cosx/secx+sinx/cscx=sec^2x-tan^2x

Trigonometry - Find the exact value of tan(a-b) sin a = 4/5, -3pi/2<a<-pi...

Trigonometry - Prove the following trigonometric identities. please give a ...

Trigonometry - Simplify #1: cscx(sin^2x+cos^2xtanx)/sinx+cosx = cscx((1)tanx)/...

Math 12 - Simplify #1: cscx(sin^2x+cos^2xtanx)/sinx+cosx = cscx((1)tanx)/sinx+...

Math - Verify the identity . (cscX-cotX)^2=1-cosX/1+cosX _______ sorry i cant ...

Trigonometry Check - Simplify #3: [cosx-sin(90-x)sinx]/[cosx-cos(180-x)tanx] = [...

Trig....... - I need to prove that the following is true. Thanks (2tanx /1-tan^x...

Trig Identities - Proving identities: 1) 1+ 1/tan^2x = 1/sin^2x 2) 2sin^2 x-1 = ...