Trigonometry

ANS B

@YouKnowwhere put alpha = 30° and solve... we could've put 45° but 2alpha gives 90 which is infi.

@AdvaitGirap I need proof..

ANS B
@YouKnowwhere put alpha = 30° and solve... we could've put 45° but 2alpha gives 90 which is infi.
@AdvaitGirap I need proof..