If a line makes angles `alpha,betaa n dgamma` with threew-dimensional coordinate axes, respectively, then find the value of `cos2alpha+cos2beta+cos2ga

Question

If a line makes angles `alpha,betaa n dgamma` with threew-dimensional coordinate axes, respectively, then find the value of `cos2alpha+cos2beta+cos2ga

If a line makes angles `alpha,betaa n dgamma` with threew-dimensional coordinate axes, respectively, then find the value of `cos2alpha+cos2beta+cos2gammadot`

Monjur Alahi

5 views

2025-01-04 04:42

1 Answers

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Salim Ahmed Kawsar · Accepted Answer · 2023-02-05T15:29:48+06:00

Salim Ahmed Kawsar

`cos2alpha+cos2beta+cos2gamma`
`" "=2cos^(2)alpha-1+2cos^(2)beta-1+2cos^(2) gamma-1`
`" "=2(cos^(2)alpha+cos^(2)beta+cos^(2)gamma)-3` ltBrgt `" "=-1`

5 views Answered 2023-02-05 15:29