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If a unit vector vec a makes an angle p...

If a unit vector ` vec a` makes an angle `pi/3` with ` hat i ,\ pi/4` with ` hat j` and an acute angle `theta` with ` hat k` then find `theta` and hence, the components of ` vec a` .

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RD SHARMA ENGLISH-ALGEBRA OF VECTORS-All Questions
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  8. Define position vector of point.

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  9. Write vec P Q+ vec R P+ vec Q R in the simplified form.

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  20. Write a unit vector making equal acute angle with the coordinates axes...

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