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58. Find the value of (sin²33° + sin²57°) [Delhi 2019]

58. Find the value of (sin²33° + sin²57°) [Delhi 2019]

Grade:12th pass

1 Answers

Pawan Prajapati
askIITians Faculty 60782 Points
one year ago
Answer: Explaination: sin²33° + sin²57° ⇒ sin²33° + sin²(90° – 33°) ⇒ sin²33° + cos²33° [Using sin(90° – θ) = cos θ] ⇒ 1 [Using sin²θ + cos² θ=1]

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