Question

How do you evaluate `sin 30`?

Answer 1

`sin 30^@ = 1/2`

Explanation:

Supposing you know the equilateral triangle properties, the typical angle for this triangle, has `60^@` and the bisectrices intersect the oposite side just at their half. So we have

`sin 30^@ = (l/2)/l = 1/2`. Here `l` represents the triangle side.