Question

Use a special right triangle to write sin 30º as a simplified fraction.

Answer 1

this is  a right angled triangle with hypotenuse length 2 and the legs are of length 1 and sqrt3.
the 2 angles other than 90 degrtees are 30 and 60 degrees.
The 30 degree angle is opposite the leg of length 1 so it's  sine 
 is opp/hyp = 1 /2