The range (principal value branch) of cos⁻¹x is: (NDA PYQ)
A[−π/2, π/2]
B[0, π]
C(−π/2, π/2)
D[−π, π]
Question 3
sin⁻¹x + cos⁻¹x equals: (NDA PYQ)
A0
Bπ/4
Cπ/2
Dπ
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