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CENGAGE-TRIGONOMETRIC FUNCTIONS-Solved Examples And Exercises
- If angle C of triangle ABC is 90^0, then prove that tanA+tanB=(c^2)/(a...
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- The sides of A B C satisfy the equation 2a^2+4b^2+c^2=4a b+2a cdot Th...
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- If sides of triangle A B C are a , ba n dc such that 2b=a+c then b/c >...
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- By geometrical interpretation, prove that (i) sin(alpha+beta)=si...
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- If theta=pi/(2^n+1) , prove that: 2^ncosthetacos2thetacos2^2theta........
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- Let f(x)=cos(a1+x)+1/2cos(a2+x)+1/(2^2)cos(a1+x)++1/(2^(n-1))cos(an+x)...
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- Three circles touch each other externally. The tangents at their point...
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- Prove that tan20^0tan40^0tan60^0tan80^0=3
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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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- If in triangle A B ,cosAcosB+sinAsinBsinC=1. Show that a : b : c=1:1:s...
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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 integral values of a for which the equation cos^2x-sinx+a=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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- In a /\A B C , if tanA/2,tanB/2,tanC/2"are in"AdotPdot, then show t...
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- With usual notion, if in triangle A B C , (b+c)/(11)=(c+a)/(12)=(a+b)...
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- Solution of the equation sin(sqrt(1+sin2theta))=sintheta+costhetai s(n...
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