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Concept: Trigonometric Ratios of Complementary Angles

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Trigonometric Ratios of Complementary Angles and Direct Application

sin A = cos(90 - A),cos A = sin(90 – A)

tan A = cot (90 – A), cot A = tan (90- A)

sec A = cosec (90 – A), cosec A = sec(90 – A)

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