If x = 2 sin 2 𝜃 and y = 2cos 2 𝜃 + 1, then find x + y
CBSE Class 10 Sample Paper for 2021 Boards - Maths Standard
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CBSE Class 10 Sample Paper for 2021 Boards - Maths Standard
Last updated at April 16, 2024 by Teachoo
Question 13 If x = 2 sin2𝜃 and y = 2cos2𝜃 + 1, then find x + yNow, x + y = 2 sin2𝜃 + 2 cos2𝜃 + 1 = 2 (sin2𝜃 + cos2𝜃) + 1 Putting sin2𝜃 + cos2𝜃 = 1 = 2 × 1 + 1 = 2 + 1 = 3