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Prove that angle in a semi circle is a r...

Prove that angle in a semi circle is a rightangle by using Vector method.

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SRISIRI PUBLICATION-QUESTION PAPER -Section B
  1. Find the area of the triangle formed with the points A(1,2,3), B(2,3,1...

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  2. If bar(a)=2bar(i)+bar(j)-bar(k), bar(b)=-bar(i)+2bar(j)-4bar(k), bar(c...

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  3. Prove that angle in a semi circle is a rightangle by using Vector meth...

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  4. If (sin(alpha+beta))/(sin(alpha-beta)) = (a+b)/(a-b), then prove that ...

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  5. Show that sin A= (sin 3A) /(1+2 cos 2A). Hence find the value of sin 1...

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  6. Show that 1/(sin 10^(@)) - (sqrt(3))/(cos 10^(@)) = 4.

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  7. Show that sin ^(4). (pi)/(8)+ sin ^(4) .(3pi)/(8) sin ^(4). (5pi)/(8)...

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  8. Prove that (1+cos""pi/10)(1+cos""(3pi)/10)(1+cos""(7pi)/10)(1+cos""(9p...

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  9. If cos alpha =(3)/(5) and cos beta =(5)/(13) and alpha, beta are acut...

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  10. If cos alpha =(3)/(5) and cos beta =(5)/(13) and alpha, beta are acut...

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  11. If alpha,beta are the solutions of the equation acostheta+bsintheta=c...

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  12. If alpha,beta are the solutions of the equation acostheta+bsintheta=c...

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  13. If A is not an integral multiple of (pi), prove that cos A cos 2A cos ...

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  14. Solve sin x + sqrt(3) cos x = sqrt(2).

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  15. Solve that sqrt(2)(sinx+cosx)=sqrt(3)

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  16. Solve 2 cos^(2) theta - sqrt(3) sin theta + 1 = 0.

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  17. Solve 2 cos^(2) theta + 11 sin theta = 7.

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  18. Solve sin theta + sin 5 theta = sin 3 theta , 0 lt theta lt pi.

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  19. Solve 1+sin^2 theta=3sin thetacostheta

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  20. Solve tan theta + 3 cot theta = 5 "sec" theta.

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