Express each of the following in terms of trigonometric ratios of angles between 0° and 45°: tan77° - cot63° + sin57°

Sum

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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Chapter 22: Trigonometrical Ratios of Standard Angles - Exercise 27.3

Chapter 22 Trigonometrical Ratios of Standard Angles
Exercise 27.3 | Q 4.4

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