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Evaluate the following: sin31° - cos59°

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Question

Evaluate the following: sin31° - cos59°

Sum
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Solution

sin31° - cos59°
= sin(90° - 59°) - cos59°
= cos59° - cos59°
= 0.

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Trigonometric Equation Problem and Solution
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Chapter 22: Trigonometrical Ratios of Standard Angles - Exercise 27.3

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Frank Mathematics Part 1 [English] Class 9 ICSE
Chapter 22 Trigonometrical Ratios of Standard Angles
Exercise 27.3 | Q 2.1
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