1.

From any point P (a,b,c) perpendiculars PM &PN drawn to zx and xy-plane respectively. Let alpha, beta, gamma be the angles which OP makes with coordinate planes and theta be the angle which OP makes with the plane OMN must be Cosec ^(2) theta =

Answer»

`COT ^(2) alpha + cot ^(2) BETA + cot ^(2) GAMMA `
`COSEC ^(2) alpha + cosec ^(2) beta + cosec ^(2) gamma`
`cosec alpha + cosec beta + cosec gamma `
` cot ^(2) alpha - cot ^(2) beta - cot ^(2) gamma `

Answer :C


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