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Eliminate theta from the equations ta...

Eliminate `theta` from the equations
`tan(n theta+alpha)-tan(n theta+beta)=x` and
`cot(n theta+alpha)-cot(n theta+beta)=y`.

Text Solution

Verified by Experts

The correct Answer is:
`cot (alpha+beta)=1/x-1/y`
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ARIHANT MATHS-TRIGONOMETRIC FUNCTIONS AND IDENTITIES-Exercise (Subjective Type Questions)
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  4. If alpha+beta+gamma=2pi, then show that tan.alpha/2 + tan.beta/2 + tan...

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  6. 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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  10. In any DeltaABC, prove that Sigma (sqrt(sinA))/(sqrt(sinB)+sqrt(sinC...

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  11. Find all value of theta which satisfy, sin ( 3 theta + alpha ) + si...

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  12. If the quadratic equation , 4^(sec^(2)alpha) x^(2) + 2x + (beta^(2)-...

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  13. If 2costheta=x+1/x, prove that 2cos3theta=x^3+1/x^3

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  14. If (cos theta(1))/(cos theta(2))+(sin theta(1))/(sin theta(2))=(cos th...

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  15. Prove that sum(k=1)^(n-1) ""^(n)C(k)[cos k x. cos (n+k)x+sin(n-k)x.s...

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  17. The number of solutions of the equation cos[x]=e^(2x-1), x in [0, 2pi]...

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  18. Prove that: sum(r=0)^(n) 3^( r) ""^(n)C(r) = 4^(n).

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  19. Resolve Z^5+ 1 into linear & quadratic factors with real coefficients...

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  20. Prove that the roots of the equation 8x^(3)-4x^(2)-4x+1=0 " are " co...

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