Question
Download Solution PDFsin(x + y) = cos {3(x + y)} అయితే, cot {2(x + y)} విలువ _______.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFఇవ్వబడింది:
sin(x + y) = cos {3(x + y)}
ఉపయోగించిన సూత్రం:
sin A = cos B ⟹ A + B = π/2
గణన:
A = x + y మరియు B = 3(x + y) అనుకుందాం
⟹ A + B = π/2
⟹ (x + y) + 3(x + y) = π/2
⟹ 4(x + y) = π/2
⟹ x + y = π/8
ఇప్పుడు, cot {2(x + y)} విలువను కనుగొనాలి
⟹ 2(x + y) = 2 × π/8
⟹ 2(x + y) = π/4
cot (π/4) = 1
కాబట్టి, సరైన సమాధానం 2వ ఎంపిక.
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