1.

If a line makes alpha=45^(@),beta=60^(@) with positive direction of axis x and y, then the angle it makes with the z-axis (gamma) is

Answer»

`60^(@)`
`SIN^(2)alpha+sin^(2)beta+sin^(2)gamma=1`
`cos^(2)alpha+cos^(2)beta+cos^(2)gamma=1`
`sin^(2)alpha+sin^(2)beta+sin^(2)gamma=2`

ANSWER :A::B


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