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OpenStudy (alexatiger):
If the sin 90° is 1, then the cos ____ °= _____. 90° ; 1 over 2 0° ; square root 2 over 2 90° ; square root 3 over 2 0° ; 1
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OpenStudy (alexatiger):
I'm sure the answer is the last one, but I don't know how to explain how i got the answer (especially because I'm guessing XD)
OpenStudy (anthonyym):
Yeah it is the last one
OpenStudy (alexatiger):
Can you explain to me how??
OpenStudy (anthonyym):
|dw:1467227604350:dw| 1^2 = 0^2 + x^2 x = 1 So, cos(0) = 1
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