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If phi = tan^-1 (xsqrt3)/(2k-x) and thet...

If `phi = tan^-1 (xsqrt3)/(2k-x)` and `theta (2x-k)/(ksqrt3)`, then show that one value of `(phi - theta) is `30^@`

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UNITED BOOK HOUSE-MISCELLANEOUS EXERCISE-EXERCISE
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