If 2cosA=1, then cosA- secA is equal to

Question

MCQ (Single)Cosecant, Secant, and Cotangent as Reciprocal Ratios

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Assertion (A) : For an acute angle θ, value of cosec θ cannot be 1/√2. Reason (R) : cosec θ ≥ 1 for 0° ≤ θ ≤ 90°

Prove the following trigonometric identity : (1 + cosec A)/cosec A = cos²A/(1 − sin A)

Cosecant, Secant, and Cotangent as Reciprocal Ratios

Pythagorean Trigonometric Identity

Prove that (cos A + sin A – 1)/(cos A – sin A + 1) = cosec A – cot A

If cotθ + cosθ = p and cotθ – cosθ = q, prove that p² – q² = 4√pq

(cot θ + tan θ) equals :

The value of (1/sec²A + 1/cosec²A) is :