Question

if tan O=20/21,find sin O and cos O​

Answer 1

Tanθ = 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

Answer 2

REFER THE ATTACHMENT

HOPE IT HELPS U !!!!