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OpenStudy (anonymous):
How to verify csc^2theda/cot^2theda-1=sec2theda
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OpenStudy (idku):
csc^2theda/cot^2theda = (1/sin x ) ÷ (cos² x / sin² x) = (1/sin² x ) × (sin² x / cos² x) = 1 / cos² x so the left side equals 1/cos² x or same as sec² x So the 2 sides are equal.
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