Question

If θ is an acute angle and sin θ = 2 1 , then cos θ =

Answer 1

First of all i think theres a mistakein the question;
i think it is sin θ = $\frac{1}{2}$

and then sin 30° = $\frac{1}{2}$

thus θ= 30°$\frac{ \sqrt{3} }{2}$