Question

If sin theta + 2 cos theta =1,prove that 2 sin theta - cos theta =2

Answer 1

let theeta = m
sin m +2cos m=1
or sin m =1-2cos m

now,
2 sin m -cos m=2 -4cos m-cos m =2-5cos m

I think if the question is not correct

Answer 2

Answer:

Hope it helps you friend.