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Prove that 5 cos theta+3cos(theta+(pi)/(...

Prove that `5 cos theta+3cos(theta+(pi)/(3))+3` lies between -4 and 10.

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  3. Prove that 5 cos theta+3cos(theta+(pi)/(3))+3 lies between -4 and 10.

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  11. The values of cos^2 73^0+cos^2 47^0-sin^2 43^0+sin^2 107^0 is equal t...

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  12. The expression (sin 22^0cos8^0+cos 158^0cos98^0)/(sin 23^0cos7^0+cos 1...

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  18. If sin theta+"cosec"theta=2, then the value of sin^(8)theta+"cosec"^(...

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