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Inverse Trigonometric Functions

Section: Mathematics

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Question : 73

Total: 89

If cos−1x−cos−1

=α, where −1≤x≤1,−2≤y≤2,x≤

then for all x,y 4x2−4xy‌cos‌α+y2 is equal to :

[10 Apr 2019 Shift 2]

4sin2α
2sin2α
4cos2α+2x2y2
4sin2α−2x2y2

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