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If cos^(-1)x + cos^(-1)y + cos^(-1)z = 3...

If `cos^(-1)x + cos^(-1)y + cos^(-1)z = 3pi,` then `xy + yz +zx` is equal to

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CHHAYA PUBLICATION-TRIGONOMETRIC INVERSE CIRCULAR FUNCTIONS-sample questions for competive examination
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  2. sin^(-1)x gt cos^(-1)x golds for -

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  4. 2 cot ^(-1) 7+ cos ^(-1) ((3)/(5)) is equal to -

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  5. theta = tan ^(-1)(2 tan ^(2) theta )- tan ^(-1) ((1)/(3) tan theta...

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  8. If cos^(-1)x + cos^(-1)y + cos^(-1)z = 3pi, then xy + yz +zx is equal ...

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  12. Find prinicipal values for inverse circular functions sin^(-1)(sin...

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  17. Cos^(-1) ( 4x ^(3) - 3x ) =a + b cos ^(-1)x is a equation of trig...

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  18. Cos^(-1) ( 4x ^(3) - 3x ) =a + b cos ^(-1)x is a equation of trig...

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  19. Find the general value of sin^-1(sqrt3/2)

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  20. Statement -I : tan ^(-1)""((3)/(4))+tan ^(-1) ""((1)/(7))= (pi)/(4) s...

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