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OpenStudy (anonymous):
What is the value of cos(tan^-1 1) ? a. 2 c. 2 sqrt2 b. sqrt 2 d. sqrt2/2
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OpenStudy (campbell_st):
tan^-1(1) = 45 degrees so find cos(45) its an exact value and can be found using the triangle below |dw:1361433572585:dw|
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