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## tiff1998g what is the sine of pi/2 one year ago one year ago

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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.