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CENGAGE PUBLICATION-TRIGONOMETRIC FUNCTIONS-All Questions
- Let f(x)=cos(a1+x)+1/2cos(a2+x)+1/(2^2)cos(a3+x)+ ........+ 1/(2^(n-1)...
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- Three circle touch one another externally. The tangents at their point...
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- Prove that tan20^0tan40^0tan80^0=tan60^0
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- If cottheta+tantheta=x and sectheta-costheta=y , prove that (x^2y)^(...
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- The solution of the system of equations sinxsiny=(sqrt(3))/4,cosxcosy=...
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- Find the least value of sec A+secB+secC in an acute angled triangle
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- In triangle ABC if cosAcosB +sinAsinB sinC=1 then prove that a:b:c=1:1...
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- Let f(x) = sin^6x + cos^6x + k(sin^4 x + cos^4 x) for some real numbe...
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- Number of values of p for which equation sin^3x+1+p^3-3 p sinx=0 (p >0...
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- In A B C , prove that cosA+cosB+cosClt=3/2dot
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- In a DeltaABC, the median to the side BC is of length 1/sqrt(11-6sqrt...
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- If pcos e ctheta+qcottheta=2 and p^2cos e c^2theta-q^2cot^2theta=5 t...
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- If a, b and c are in G.P. then prove that <math xmlns="http://www.w3...
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- In triangle ABC tan(A/2), tan(B/2) and tan (C/2) are in A.P. then prov...
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- In triangleABC (b+c)/11=(c+a)/12=(a+b)/13 then prove that (cosA)/7=(co...
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- alpha,beta,gammaand delta are angles in I,II,II and IV quadrants, resp...
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- Solution of the equation sin(sqrt(1+sin2theta))=sintheta+costhetai s(n...
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- If in triangle ABC cosA+cosB+cosC=3/2 then prove that triangle is equi...
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- Let alpha,beta,gamma>0a n dalpha+beta+gamma=pi/2dot Then prove that sq...
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- In DeltaABC, if BC is unity, sin(A/2)=x1,sin(B/2)=x2,cos(A/2)=x3,cos(B...
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