Question

If $sin\theta =cos\theta$, then value of $\theta$ is

• A. 0 degrees
• B. 45 degrees
• C. 30 degrees
• D. 90 degrees

Answer 1

The correct option is B

45 degrees

We know, $sin\theta =cos({90}^{\circ }-\theta )$;
Given that , $sin\theta =cos\theta$ ;
Therefore, ${90}^{\circ }-\theta =\theta$ ;
And thus, $\theta ={45}^{\circ }$