Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities

ఒకవేళ sinA + cosecA = 2 అయితే, cot (A - 15°) విలువ ఎంత?

1
(√5 - 1)/(√5 + 1)
2
(√7 - 1)/(√7 + 1)
3
(√3 + 1)/(√3 - 1)
4
(√3 - 1)/(√3 + 1)

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