Question

2 tan 30°
1+tan30°
(A) cos 60°
(B) sin 60°
(C) tan 60°
(D) cot 60°​

Answer 1

I hope ur question is incomplete

here is question + answer

Question:

2 tan 30°/(1-tan² 30°)

Solution:

= 2(Sin 30°/Cos 30°)/{1-(Sin 30°/ Cos 30°)²}

= 2 Sin 30° Cos 30°/ (Cos² 30°- Sin² 30°)

= Sin (2×30°)/ Cos (2×30°)

= Sin 60° / Cos 60°

= Tan 60°.

So, option (c) is correct.