NDA Math Trigonometric Ratios of Angles and Equations Part 2

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Question : 31 of 75

Marks: +1, -0

tan−1x+cot−1x=‌

π

2

‌‌ holds, when

[NDA-I 2021]

x∈R
x∈R−(−1,1) only
x∈R−{0} only
x∈R−[−1,1] only

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