Q19. If x sin (90° – θ) cot (90° – θ) = cos (90° – θ), then x is equal to
Question
(a) 0
(b) 1
(c) -1
(d) 2
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Class 10 Maths
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2021-12-23T11:07:39+00:00
2021-12-23T11:07:39+00:00 1 Answer
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Answer ( 1 )
Answer: (b) 1
x sin(90 – θ) cot(90 – θ) = cos(90 – θ)
=> x cosθ tanθ = sinθ
=> x tanθ = tanθ
=> x = 1