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cos{cos^(-1)(-1/7)+sin^(-12)(-1/7)} =...

`cos{cos^(-1)(-1/7)+sin^(-12)(-1/7)}` =

A

`-(1)/(3)`

B

`0`

C

`(1)/(3)`

D

`(4)/(9)`

Text Solution

Verified by Experts

The correct Answer is:
B
`cos[cos^(-1)(-(1)/(7))+sin^(-1)(-(1)/(7))]="cos"(pi)/(2)`
`[becausecos^(-1)x+sin^(-1)x=(pi)/(2)]=0`
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-PRACTICE SET 10-PAPER 2 (MATHEMATICS)
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  2. The general solution of y^(2)dx+(x^(2)-xy+y^(2))dy=0, is

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  7. The value of alpha, which satisfy int(pi/2) ^(alpha) sin x dx = sin2al...

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  12. Determine the ratio in which the line 3x+y-9=0 divides the segment joi...

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  13. The angle between the lines sqrt(3)x-y-2=0 and x-sqrt(3)y+1=0 is

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  14. The bisector of the acute angle formed between the lines 4x - 3y + 7 ...

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  15. The value of i^2 + i^4 + i^6 + i^8....upto (2n+1) terms , where i^2 = ...

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  16. The coordinate of the point of intersection of the line (x-1)/(1)=(y+2...

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  17. The acute angle between the line joining the points (2,1,-3) and (-3,1...

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  18. If 0ltaltb, then lim(nto oo) (a^(n)+b^(n))/(a^(n)-b^(n))

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  19. if tan(k+1)theta=tantheta, then theta belongs to the set

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