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OpenStudy (anonymous):
cos theta =10/26 , theta lies in quadrant IV.. need answers for Sin 2theta, cos 2 theta, tan 2 theta
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OpenStudy (anonymous):
Look up arc cos (10/26) = theta Then find the others from similar tables or calculator.
OpenStudy (anonymous):
i m trying but no luck !!
OpenStudy (anonymous):
What do you get for theta? 67.3 degrees ?
OpenStudy (anonymous):
Since it lies in the IV quadrant, it is 67.3 degrees below the horizontal or 360-67.3 = 292.7 degrees counter clockwise from theta = 0 (direction of x axis.).
OpenStudy (anonymous):
Your notation makes me unsure whether you are looking for the square of the sin or the sin of twice theta. Etc.
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OpenStudy (anonymous):
idk for some reason my answers r totally wrong i guess ?
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