## tiff1998g 2 years ago what is the sine of pi/2

1. klimenkov

It equals 1.

2. tiff1998g

thanks

3. ParthKohli

In degree language,$\sin\left({\pi \over 2}\right) = \sin(90^{\circ}) = 1$

4. tiff1998g

thank you

5. lgbasallote

careful....

6. ParthKohli

|dw:1350309652169:dw| We observe that we are left with hypotenuse over hypotenuse because the opposite side to 90 is just the hypotenuse.