Question

Tan theta=20/21 evaluate sin theta and cos theta's value

Answer 1

Answer:

3/7

Step-by-step explanation:

anθ = 20/21

so, sinθ =20/29

cosθ = 21/29

now,

(1-sinθ+cosθ)/(1+sinθ + cosθ)

putting the values,

[1 - (20/29)+(21/29)]/[1 +(20/29)+(21/29)]

=(29-20+21)/(29+20+21)

=30/70

=3/7