Inverse Trigonometric Functions
RS Aggarwal
CBSE
Grade 12
Question:
The value of $\sin\left(\cos^{-1} \dfrac{4}{5}\right)$ is:
(a) $3/5$
(b) $4/5$
(c) $1/5$
(d) $2/5$
Step-by-Step Solution
Key Concept: cos^{-1}(4/5) = \theta => cos\theta = 4/5 => sin\theta = 3/5.
The detailed step-by-step mathematical proof is available inside the Mathbee app workspace.
Correct Answer: $3/5$
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