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prove tan x sin x + cos x = sec x

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if `0 lt x lt pi` and `cos x + sin x =1/2`, then `tan x` is

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Q30. Prove that : (sin𝒙 − cos𝒙 + 1). (sec𝒙 − tan𝒙) = (sin𝒙 + cos𝒙 − 1)