Answer the questions below about fundamental trigonometric identities.
a. (i) Starting with sin2θ+cos2θ=1, derive the identity 1+cot2θ=csc2θ.
b. (ii) For an acute angle θ where cotθ=247, compute cscθ.
c. (iii) Verify numerically that the values in part (ii) satisfy the identity obtained in part (i).
d. (iv) Using the same angle, determine sinθ and cosθ."