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OpenStudy (anonymous):
How is cos^-1(sin33pi/2)=0?? I have no idea how to get to the answer.
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OpenStudy (anonymous):
sin(33Pi/2)=1 now cos^-1(1)=0
OpenStudy (anonymous):
how is cos^ -1 =1?
OpenStudy (anonymous):
maybe I wrote the question wrong. It is: cos^-1(sin(33pi/2)). The answer is 0, but I dont know how to get there...
OpenStudy (anonymous):
cos^-1(1)=0
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