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प्रश्न
Evaluate the following:
`tan(cos^-1 8/17)`
उत्तर
`tan(cos^-1 8/17)=tan{tan^-1 (sqrt(1-(8/17)^2))/(8/17)}` `[thereforecos^-1x=tan^-1 ((sqrt(1-x^2))/x)]`
`=tan(tan^-1 (15/17)/(8/17))`
`=15/8`
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