Question

Please! Please answer these....

Answer 1

Step-by-step explanation:

1) cot^2 θ - 1/sin^2 θ = cot^2θ - cosec^2 θ = 1

2)sin θ=cos θ

   tan^2 θ + cos^2 θ

    (sin θ/cos θ)^2 + cos^2                       (given sin θ=cos θ)

     (sin θ /sin θ)^2 + cos^2 θ

      1 + cos^2 θ