Mathematics
Find the value of θ (0° < θ < 90°) if :
cos 63° sec (90° - θ) = 1
Trigonometrical Ratios
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Answer
Given,
cos 63° sec (90° - θ) = 1
We know that,
cos A sec A = 1
∴ 90° - θ = 63°
⇒ θ = 90° - 63°
⇒ θ = 27°.
Hence, θ = 27°.
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