Question

sin 3o: Sin : 60 : sin 90​

Answer 1

Remember that the (x, y) coordinates are (cos(θ), sin(θ)). So, by using the graph you can see that sin(30)=1/2, sin(45)=√2/2, sin(60)=√3/2, and sin(90)=1.

Answer 2

Answer:

Sin 30 = 1/2

Sin 60 = root 3/2

Sin 90 = 1