Question

if 4tanQ =3 evaluate 4sinQ-cosQ upon mein 4sinQ+cosQ-1

Answer 1

A very Easy Method
Given that
4tanQ=3
so,
tanQ=3/4
sinQ/cosQ=3/4
as sinQ:cosQ=3:4
so by ratio sinQ=3,CosQ=4
To find: 4sinQ-cosQ/4sinQ+cosQ-1
solution: putting values
= 4(3)-4/4(3)+4-1
=12-4/12+3
=8/15
So, the required answer is 8/15