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The value of tan (2 "tan"^(-1)(1)/(5)-(p...

The value of tan `(2 "tan"^(-1)(1)/(5)-(pi)/(4))` is

A

1

B

0

C

`7/17`

D

`-7/17`

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The correct Answer is:
D
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OBJECTIVE RD SHARMA-INVERSE TRIGONOMETRIC FUNCTIONS -Chapter Test
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  2. If 1/2 le x le 1 then sin^(-1) (3x-4x^(3)) equals

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  3. The value of tan (2 "tan"^(-1)(1)/(5)-(pi)/(4)) is

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  4. If tan(x+y)=33, and x= tan^(-1)3, then: y=

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  5. Two angles of a triangle are cot^-1 2 and cot^-1 3, then the third ang...

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  6. If A=2tan^(-1)(2sqrt(2)-1)a n dB=3sin^(-1)(1/3)+sin^(-1)(3/5), then wh...

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  7. Let a, b and c be positive real numbers. Then prove that tan^(-1) sqrt...

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  8. If sin^(-1)x+sin^(-1)y+sin^(-1)z=(3pi)/(2) the value of x^(100)+y^(10...

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  9. The value of (alpha^3)/2cos e c^2(1/2tan^(-1)alpha/beta)+(beta^3)/2sec...

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  10. If a,b are positive quantitis and if a(1)=(a+b)/(2), b(1)=sqrt(a(1)b) ...

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  11. tan""(2pi)/(5)-tan""(pi)/(15)-sqrt3tan""(2pi)/(5)tan""(pi)/(15) is equ...

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  12. If a(1),a(2),a(3),….a(n) is a.p with common difference d then tan{tan...

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  13. If x=sin(2tan^(- 1)2), y=sin(1/2tan^(- 1)(4/3)) , then -

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  14. Which of the following angles is greater? theta1=sin^(-1)(4/5)+sin^(-...

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  15. The value of cos[1/2 cos^(-1){cos(sin^(-1)((sqrt63)/(8)))}] is

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  16. Solve tan^(-1)("x"+1)+tan^(-1)("x"-1)=tan^(-1)"\ "8/(31)

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  17. If alpha = sin^(-1)(sqrt(3)/2)+sin^(-1)(1/3) , beta =cos ^(-1)(sqrt(3)...

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  18. The sum of the two angles cot^(-1) 3 and cosec^(-1) sqrt(5) is

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  19. Show that: cos(2tan^(-1)1/7)=sin(4^(-1)1/3)

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  20. Number of integral solutions of the equation 2 sin^-1sqrt(x^2-x +1 )+ ...

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