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For any angle θ, state the value of: sin2 θ + cos2 θ - Mathematics

Question

For any angle θ, state the value of: sin²θ + cos²θ

Sum

Solution

sin² θ =cos² θ

= sin² θ + 1 – sin²θ = 1

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Q 8.3 Q 8.2 Q 9.1

Chapter 23: Trigonometrical Ratios of Standard Angles [Including Evaluation of an Expression Involving Trigonometric Ratios] - Exercise 23 (A) [Page 291]

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Selina Concise Mathematics [English] Class 9 ICSE

Chapter 23 Trigonometrical Ratios of Standard Angles [Including Evaluation of an Expression Involving Trigonometric Ratios]
Exercise 23 (A) | Q 8.3 | Page 291