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Trigonometric Functions & Equations

Section: Mathematics

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Question : 9

Total: 30

For non – negative integers n, let

π)‌sin(‌‌

Assuming cos−1x takes values in [0,π] which of the following options is/are correct?

[JEE Adv 2019 P2]

If
α=tan(cos−1f(6)),‌then‌α2+2α−1=0
sin(7cos−1f(5))=0
f(4)=‌‌
√3
2
lim
n→∞
f(n)=‌‌
1
2

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