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Prove that sin^(2) (pi/6) + cos^(2) (pi/...

Prove that `sin^(2) (pi/6) + cos^(2) (pi/3) - tan^(2) (pi/4) = - (1)/(2)`

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AAKASH INSTITUTE ENGLISH-TRIGNOMETRIC FUNCTIONS -Try Yourself
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  3. Prove that sin^(2) (pi/6) + cos^(2) (pi/3) - tan^(2) (pi/4) = - (1)/(2...

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  10. i) If A+B=pi/4 prove that: (cotA-1)(cotB-1)=2 ii) If tan(picosthet...

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  13. Prove that : (sinA+sin3A)/(cosA+cos3A)=tan2A

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  15. Prove that: (a) (sin 2 theta)/(1+cos 2 theta)=tan theta (b) (1+sin ...

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  16. Prove that : cos4x=1-8sin^2xcos^2x

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  17. about to only mathematics

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