Question

If cos (81 + θ)° = sin`("k"/3 - theta)^circ` where θ is an acute angle, then the value of k is ______.

पर्याय

• 18°

• 27°

• 9°

• 81°

Answer 1

If cos (81 + θ)° = sin`("k"/3 - theta)^circ` where θ is an acute angle, then the value of k is 27°.