The value of sin(cos⁻¹(4/5)) is:
The value of sin(cos⁻¹(4/5)) is:
- A. 3/5
- B. 4/5
- C. 1
- D. 0
Answer: A) 3/5
Explanation: Let cos⁻¹(4/5) = θ. Then cos θ = 4/5. Using Pythagoras, sin θ = √(1 − (4/5)²) = 3/5.
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