The value of (cosecA + cotA +1)(cosecA -

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Target Exam

CUET

Subject

General Aptitude Test

Chapter

Quantitative Reasoning

Topic

Trigonometry

Question:

The value of (cosecA + cotA +1)(cosecA - cotA + 1) - 2cosecA is:

Options:

Correct Answer:

Explanation:

( [cosecA + cotA] + 1) ( [cosecA - cotA] + 1) - 2cosecA

⇒ cosec²A - cot²A + cosecA + cotA + cosecA - cotA + 1 - 2cosecA

⇒ 1 + 2cosecA + 1 - 2cosecA

⇒ 2