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find the value of tan^(-1)(1)+cos^(-1)(1...

find the value of `tan^(-1)(1)+cos^(-1)(1/2)+sin^(-1)(-1/2)`

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the value of: `tan^(-1)(1)+cos^(-1)(-1/2)+sin^(-1)(-1/2)`

`=pi/4+(2pi)/3-pi/6`

`=(3pi+8pi-2pi)/12`

`=(9pi)/12`

`=(3pi)/4`
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CENGAGE PUBLICATION-CONTINUITY AND DIFFERENTIABILITY-All Questions
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  3. find the value of tan^(-1)(1)+cos^(-1)(1/2)+sin^(-1)(-1/2)

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