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If a vector makes angle `alpha,beta,gamma` with OX, OY and OZ respectively, then write the value of `sin^2alpha+sin^2beta+sin^2gammadot`

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`sin^2alpha+sin^2beta+sin^2gamma=(1-cos^2alpha)+(1-cos^2beta)+(1-cos^2gamma)`
`=3-(cos^2alpha+cos^2beta+cos^2gamma)`
As, `(cos^2alpha+cos^2beta+cos^2gamma)=1`
`therefore sin^2alpha+sin^2beta+sin^2gamma=3-1=2`
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