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

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

Sum

sin² θ =cos² θ

= sin² θ + 1 – sin²θ = 1

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Chapter 21: Trigonometrical Ratios [Sine, Consine, Tangent of an Angle and their Reciprocals] - EXERCISE 21 (C) [Page 323]

Chapter 21 Trigonometrical Ratios [Sine, Consine, Tangent of an Angle and their Reciprocals]
EXERCISE 21 (C) | Q 9. (iii) | Page 323