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OpenStudy (anonymous):
Find the exact value of sin(cos^-1(3/7)) is the answer 2sqrt10/7 or 7/2sqrt10
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OpenStudy (anonymous):
A
OpenStudy (anonymous):
2sqrt(10)/7
OpenStudy (anonymous):
|dw:1361673321805:dw|
OpenStudy (anonymous):
\[ x^2+3^2=7^2\implies x=\sqrt{49-9}=\sqrt{40} = 2\sqrt{10} \implies x/7 = 2\sqrt{10}/7 \]
OpenStudy (anonymous):
thanks to both!I get it now
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