Question

if sintheata-4/5 find the value of 9/(1+tantheata)costheta

Answer 1

Given, sin θ=4/5

to find 9/(1+tan θ)cos θ

sin θ=P/H

P=4 H=5

By Pythagoras theorem B=3

cosθ=3/5

tanθ=4/3

9/(1+4/3)3/5

9/(9/5)3/5

9/(27/25)

25/3