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CENGAGE PUBLICATION-TRIGONOMETRIC FUNCTIONS-All Questions
- If in a triangle acos^2(C/2)+ c cos^2(A/2)=(3b)/2, then find the rela...
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- Evaluate cosacos2acos3a......... cos 999 a , where a=(2pi)/(1999)dot
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- If sin^3theta+sinthetacos^2theta=1,t h e ntheta is equal to (n in Z)
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- Let ABC be a triangle of area 24sq.units and PQR be the triangle forme...
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- Find the number of pairs of integer (x , y) that satisfy the followin...
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- Prove that (4cos^2 9^0-3)(4cos^2 27^0-3)=tan9^0dot
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- Let A D be a median of the A B Cdot If A Ea n dA F are medians of ...
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- Find the value of cos12^0+cos84^0+cos156^0+cos132^0
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- If no solution of 3siny+12sin^3x=a lies on the line y=3x , then a in ...
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- If in a triangle P Q R ,sinP ,sinQ ,sinR a r e i n AdotPdot , then ...
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- Find the angle theta whose cosine is equal to its tangent.
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- If sin^2x-2sinx-1=0 has exactly four different solutions in x in [0,np...
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- If in a triangle the angles are in the ratio as 1:2:3 , prove that the...
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- A balloon is observed simultaneously from three points A, B and C on a...
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- A general solution of tan^2theta+cos2theta=1 is (n in Z) npi=pi/4 (...
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- In an equilateral triangle, three coins of radii 1 unit each are kept ...
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- Prove that tan(pi/10) is a root of polynomial equation 5x^4-10 x^2+1=0...
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- If sinx+cosx=sqrt(y+1/y) for x in [0,pi] , then
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- Prove that: t a nalpha+2tan2alpha+4tan4alpha+8cot8alpha=cotalpha
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- sintheta+sqrt(3)costheta=6x-x^2-11 ,0lt=thetalt=4pi,x in R , (a) hold...
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