(3 cos θ+ cos 3 θ/3 sin θ- sin 3 θ) is equal to

Question

(3 cos θ+ cos 3 θ/3 sin θ- sin 3 θ) is equal to (A) 1+ cot 2 θ (B)  cot 4 θ (C)  cot 3 θ (D) 2 cot θ

Tardigrade Admin · Accepted Answer

(3 cos θ+4 cos 3 θ-3 cos θ/3 sin θ-(3 sin θ-4 sin 3 θ))=(4 cos 3 θ/4 sin 3 θ)= cot 3 θ

Q. $\frac{3 c o s θ + c o s 3 θ}{3 s i n θ - s i n 3 θ}$ is equal to