Question

Explain how to use the measures of a right triangle to calculate sin 30. Explain how this information can be used to determine sin 60

Answer 1

make an equilateral triangle on the unit circle
i'll try my best to explain it :-)

Answer 2

we should create a right triangle near to the x-axis on the unit circle at 30 degree
to find (x and y) coordinate
x-coordinate = cos points
y - coordinate = sin value
to make it equilateral triangle ,i would create another right triangle over the x-axis