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If one angle of a right triangle measures
a°, and the cos a °=\(\frac35\), then what is the sin(90-a)° ?
In a right triangle, the measure of one angle is a°, where cos a° =
\(\frac7{10}\). What is the value of sin(90° − a°)?
There exist two angles: angle w and angle z. If sin sin w° =cos cos z° , and w=2m+7 and z=3m+3, what is the value of m ?