Recommended Questions
- The value of cos^2 20^@ – sin^2 100^@ + cos20^@ cos100^@ is -
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- cos20^(@)+cos100^(@)+cos140^(@)=
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- The value of cos^(2)20^(@)sin^(2)100^(@)+cos20^(@)cos100^(@) is -
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- Prove that: cos 100^0+cos 20^0=cos 40^0
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- Prove that: cos 20^0+cos 100^0+cos 140^0=-0
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- Prove that: cos 20^0cos 100^0+cos 100^0cos 140^0-\ cos 140^0cos 200^0=...
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- The value of cos20^(@)cos100^(@)+cos100^(@)cos140^(@)-cos140^(@)cos200...
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- Acos20^@-sin20^@, B=cos100^@+sin100^@, C=cos(5pi)/6+sin(2pi)/3 then th...
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- A=cos20^(@) - sin 20^(@) ,B=cos100^(@) + sin100^(@) , C= cos""(5pi)/6+...
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