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Mathematics 9 Online
OpenStudy (anonymous):

If cos(theta)=4/7, define the angle (theta) in terms of inverse cosine function.

OpenStudy (lucaz):

if you take the arc sine of 4/7 you find the value of theta

OpenStudy (lucaz):

sorry, arc cos

OpenStudy (mathmale):

This problem requires no work other than to utilize the definition of the arccos function. If cos theta = (4/7), then theta is simply arccos (4/7).

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