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Find the value of "cos"(2cos^(-1)x+sin^(...

Find the value of `"cos"(2cos^(-1)x+sin^(-1)x)` at `x=1/5,` where `0lt=pi` and `-pi/2lt=sin^(-1)xlt=pi/2dot`

Text Solution

Verified by Experts

The correct Answer is:
`(-2sqrt(6))/(5)`
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