Crey | What is the value of 5 cos⁻¹(1/2)+7sin⁻¹(−1/2) – (π/2), π, π/2, 17π/6

Question

What is the value of 5 cos⁻¹(1/2)+7sin⁻¹(−1/2)

Options :

– (π/2)
π
π/2
17π/6

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