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OpenStudy (anonymous):
The sine of 12 degrees is equal to 0.208, rounded to the nearest thousandth. What is the measure of an angle whose cosine is also equal to 0.208?
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geerky42 (geerky42):
Hint: \[\large \cos\left(90^o-x\right) = \sin(x)\]
OpenStudy (anonymous):
is it 78 ?
geerky42 (geerky42):
yep
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