prove that cot theta = cos theta /tan theta
Answers
Answered by
3
Answer:
Step-by-step explanation:
L.H.S=cotθ−tanθ
=
sinθ
cosθ
−
cosθ
sinθ
=
sinθcosθ
cos
2
θ−sin
2
θ
=
sinθcosθ
cos
2
θ−(1−cos
2
θ)
=
sinθcosθ
cos
2
θ−1+cos
2
θ
=
sincosθ
2cos
2
θ−1
=R.H.S
Hence,
cotθ−tanθ=
sincosθ
2cos
2
θ−1
proved.
Similar questions