Grade 12th pass10 grade maths
58. Find the value of (sin²33° + sin²57°) [Delhi 2019]
58. Find the value of (sin²33° + sin²57°) [Delhi 2019]
1 Answer
Pawan Prajapati
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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