Question

(1+cos0) (1-cos0) 1+cot20)=1​

Answer 1

Answer:

(1+cosθ)(1-cosθ)(1+cot²θ)

=(1-cos²θ)cosec²θ

=sin²θcosec²θ

=1

Answer 2

Answer:

(1+cosØ)(1-cosØ)(1+cot²Ø)

= (1-cos²Ø)(cosec ²Ø)

=sin²Øcosec²Ø

=sin²Ø×1/sin²Ø

= 1

hope it helps ✨☺️