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OpenStudy (anonymous):
cos theta= .81 find theta
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OpenStudy (anonymous):
apply cos inverse to both sides theta = cos^-1(0.81)
OpenStudy (anonymous):
Oh! duh thank you!
OpenStudy (anonymous):
make sure your calculator is set to the units of measure you require there is degrees, radians and gradians
OpenStudy (anonymous):
its roughly 35.9 degrees
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