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प्रश्न
secθ . Cot θ= cosecθ ; write true or false
विकल्प
True
False
उत्तर
sec θ . cot θ = `(1)/(cosθ) (cosθ)/(sinθ) = (1)/(sinθ) = cosecθ`
Secθ . cot θ = cosec θ is true
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