#
Arjun Gupta sir (Meritnation expert), Sir, you provided a solution to one of my question before 10 minutes. But, I am unable to understand, that how "sin 30" = 1/2. But, I am able to understand the other things and answer other than ... how sin 30 = 1/2. I also know that N/m^{2} ^{ } = Pascal.

$\mathrm{These}\mathrm{are}\mathrm{the}\mathrm{standard}\mathrm{trigonometric}\mathrm{values}.\phantom{\rule{0ex}{0ex}}\mathrm{That}\mathrm{you}\mathrm{have}\mathrm{to}\mathrm{learn}.$

Regards

**
**