1.

The unit vector bar(a) and bar(b) are perpendicualr to each other. The unit vector bar( c ) makes an angle theta with bar(a) and bar(b). If bar( c )=alpha bar(a)+beta bar(b)+gamma(bar(a)xx bar(b)) then …………

Answer»

`alpha=2beta`
`gamma^(2)=1+2alpha^(2)`
`gamma^(2)=COS2THETA`
`beta^(2)=(1+cos2 THETA)/(2)`

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