Posted by **Yulieth** on Sunday, November 20, 2011 at 11:12pm.

given tanθ= -2√10/3 and π/2<θ< π find:

sin2θ

tan θ/2

given sinθ=-5/13 and π<θ<3π/2 find

sin2θ

cos( θ-4π/3)

sin(θ/2)

can some1 explain this to me please?

## Answer this Question

## Related Questions

- Precalc/Trig - Sorry there are quite a few problems, but I just need to know if ...
- trigonometry - if cosθ=2/3 and tanθ<0 find the exact value sin(&#...
- trigonometry - tanθ= -2sqrt10/3 and π/2<θ< π find a. ...
- trig - cosθ =5/13 with -π/2 < θ <0 find each of the ...
- math - given sinθ=-5/13 and π<θ<3π/2 find sin2θ ...
- mathematics - given sinθ=-5/13 and π<θ<3π/2 find sin2...
- math - if cosθ=2/3 and tanθ<0 find the exact value sin(θ-5&#...
- mathematics - given tanθ= -2√10/3 and π/2<θ< π ...
- Math - Calculus - The identity below is significant because it relates 3 ...
- Maths - Given tanθ=−4/3, where π/2<θ<π, what is ...