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प्रश्न
Express each of the following in terms of trigonometric ratios of angles between 0° and 45°: tan77° - cot63° + sin57°
योग
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उत्तर
tan77° - cot63° + sin57°
= tan(90° - 13°) - cot(90° - 27°) + sin(90° - 33°)
= cot13° - tan27° + cos33°.
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Trigonometric Equation Problem and Solution
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