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RD SHARMA-TRIGONOMETRIC RATIOS-All Questions
- Show that: 2(cos^2 45o+tan^2 60o)-6(sin^2 45o-tan^2 30o)=6 (ii) 2...
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- Solve each of the following equations when 0o<theta<90o . 2costheta...
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- Solve each of the following equations when 0o<theta<90o . 2sin^2the...
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- Find the value of theta in each of the following: (i)2sin2theta=sqrt...
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- If A=30^@ verify that cos3A=4cos^3A-3cosA
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- If x=30^@ , verify that : (i) tan2x=(2tanx)/(1-tan^2x) (ii) sinx=sqr...
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- Verify that: sin60o=(2tan30o)/(1+tan^2 30o)=(sqrt(3))/2 (ii) cos60...
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- Verify that: (i) cos60^@=cos^2 30^@-sin^2 30^@=1/2 (ii) 4(sin^4 30^...
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- If theta is an acute angle and sintheta=costheta , find the valu...
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- Given that sin(A+B)=sinAcosB+cosAsinB , find the value of sin75^@ .
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- In a rectangle A B C D ,\ \ A B=20 c m , /B A C=60o . Calculate ...
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- Evaluate the following: (i) sin45osin30o+cos45ocos30o (ii) sin60oc...
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- Evaluate the following: (i) cos60ocos45o-sin60osin45o (ii) sin^2 3...
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- Evaluate the following: cos^2 30o+cos^2 45o+cos^2 60o+cos^2 90o (...
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- Evaluate the following: (i) 2sin^2 30o-3cos^2 45o+tan^2 60o (ii) s...
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- Evaluate the following: 4(sin^4 60o+cos^4 30o)-3(tan^2 60o-tan^2 4...
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- Evaluate the following: cos e c^3 30ocos60otan^3 45osin^2 90osec^2 ...
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- Evaluate the following: (cos0o+sin45o+sin30o)(sin90o-cos45o+cos60o)...
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- Evaluate the following: (i) 4/(cot^2 30o)+1/(sin^2 60o)-cos^2 45o ...
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- Evaluate the following: (tan^2 60o+4cos^2 45o+3sec^2 30o+5cos^2 90o...
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