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The maximum value of (log)(20)(3s in x-4...

The maximum value of `(log)_(20)(3s in x-4cos x+15)-` a.`\ 1` b. `2` c. `3` d. `4`

A

1

B

2

C

3

D

4

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VIKAS GUPTA (BLACK BOOK)-COMPOUND ANGLES-Exercise-5 : Subjective Type Problems
  1. The maximum value of (log)(20)(3s in x-4cos x+15)- a.\ 1 b. 2 c. 3 d....

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  2. Let P=(sin80^(@)sin65^(@) sin35^(@))/(sin20^(@)+sin50^(@)+sin110^(@))...

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  3. The value of expression (1-cot23^(@))(1-cot22^(@)) is equal to :

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  4. If tanA and tanB the roots of the quadratic equation, 4x^(2)-7x+1=0 th...

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  5. A(1)A(2)A(3)………A(18) is a regular 18 sided polygon. B is an external p...

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  6. If 10sin^4 alpha +15cos^4alpha=6 then the value of 9cosec^4 alpha + 8...

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  7. The value of (1+tan\ (3pi)/8*tan\ pi/8)+(1+tan\ (5pi)/8*tan\ (3pi)/8)+...

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  8. If alpha=pi/7 then find the value of (1/cosalpha+(2cosalpha)/(cos2alph...

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  9. Given the for a,b,c,d in R, if a sec(200^@)- ctan(200^@)=d and b sec(...

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  10. The expression 2"cos"(pi)/(17)*"cos"(9pi)/(17)+"cos"(7pi)/(17)+"cos"(9...

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  11. If the expression (sin theta sin2theta+sin3theta sin60theta+sin4theta...

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  12. Let a=sin10^(@), b =sin50^(@), c=sin70^(@)," then " 8abc((a+b)/(c ))((...

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  13. If sin^(3)theta+sin^(3)(theta+(2pi)/(3))+sin^(3)(theta+(4pi)/(3))=a s...

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  14. If sum(r=1)^(n)((tan 2^(r-1))/(cos2^(r )))=tanp^(n)-tan q, then find t...

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  15. If x=sec theta-tan theta and y="cosec"theta+cot theta," then " y-x-xy...

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  16. If cos18^(@)-sin18^(@)=sqrt(n)sin27^(@), then n=

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  17. The value of 3(sin1-cos1)^(4)+6(sin1+cos1)^(2)+4(sin^(6)1+cos^(6)1) i...

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  18. Q. x=a satisfy the equation 3^(sin 2x+2 cos^2 x)+3^(1-sin 2x+2 sin^ 2x...

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  19. The minimum value of (sintheta+c o s e ctheta)^2+(costheta+sectheta)^...

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  20. If tan20^0+tan40^0+tan80^0-tan60^0= lambdasin40^0,

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  21. If K^(@) lies between 360^(@) and 540^(@) and K^(@) satisfies the equa...

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