# trigonometry

posted by
**Yulieth** on
.

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?

posted by
**Yulieth** on
.

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?