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OpenStudy (anonymous):
Find the exact value of cos(arcsin(one fourth)). For full credit, explain your reasoning. Help Please!!!! I'm so confused!
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OpenStudy (jdoe0001):
hmmm what does an inverse trigonometric function gives you? an angle or a value? or?
OpenStudy (campbell_st):
well start by drawing diagram |dw:1383159648379:dw| find the value of a, using pythagoras and you'll find the exact value of cos(x) which is cos(arcsin(1/4))
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