Recommended Questions
- 11. cos(660) = ?
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- The value of (sin(-660^(@))tan(1050^(@))sec(420^(@)))/(cos(225^(@))cos...
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- Prove that: sin(-420^0)(cos390^0)+cos(-660^0)(sin330^0)=-1.
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- Prove that sin(-420^0)(c0s390^0)+cos(-660^0)(sin330^0)=-1
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- To prove 11((pi)/(3))=660^(@)
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- cos ((pi) / (11)) cos ((2 pi) / (11)) cos ((3 pi) / (11)) ... cos ((11...
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- Prove that: sin(-420^(@))cos390^(@)+cos(-660^(@))sin330^(@)=-1
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- The value of cos""(pi)/(11)+cos""(3pi)/(11)+cos""(5pi)/(11)+cos""(7pi)...
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- सिद्ध कीजिए: sin ( -420) ^(@) cos (390^(@) ) cos ( -660^(@) ) sin ( ...
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