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OpenStudy (anonymous):
Can someone help me evaluate this? tan(Cos^-1(15/17))
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OpenStudy (alexwee123):
x=15 r=17 y=square root (17^2 - 15^2) =8 tanx=y/x so the answer is 8/15
OpenStudy (anonymous):
Wow! thanks for showing what you did...now it makes sense! thank you so so much!
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