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Angle between the planes x+y+2z=6 and 2x...

Angle between the planes `x+y+2z=6` and `2x-y+z=9` is

A

`(pi)/(4)`

B

`(pi)/(6)`

C

`(pi)/(3)`

D

`(pi)/(2)`

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WB JEE PREVIOUS YEAR PAPER-QUESTION PAPER 2016-MULTIPLE CHOICE QUESTIONS
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  6. lim(x to 1)((1+x)/(2+x))^(1/2)

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  7. If f(x)=tan^(-1)[(log((e )/(x^(2))))/(log (ex^(2)))]+tan^(-1)[(3+2 lo...

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  9. int 2^(x)(f'(x)+f(x)log 2)dx is equal to

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  10. int(0)^(1)log((1)/(x)-1)dx=

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