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Mathematics 17 Online
OpenStudy (anonymous):

Evaluate tan(cos^-1(-15/17) i need help!!

OpenStudy (yolomcswagginsggg):

x=15 r=17 y=square root (17^2 - 15^2) =8 tanx=y/x so the answer is 8/15

OpenStudy (anonymous):

thank you very much :)

OpenStudy (yolomcswagginsggg):

np!

OpenStudy (anonymous):

Acctually its -8/15

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