Recommended Questions
- Show that : cos9^@.cos18^@.cos36^@.cos72^@=(sin36^@)/(16cos81^@)
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- Prove that 4cos12^(@)cos48^(@)cos72^(@)=cos36^(@)
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- sin36^(@)+cos36^(@)=sqrt(2)cos9^(@)
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- The roots of the equation 4x^2-2sqrt(5)x+1=0,a r e (a)sin36^0,sin18...
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- cos3 6^(@)-cos7 2^(@)=
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- Evaluate the following: sin 36^0cos9^0+cos36^0 sin9^0
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- Prove that (sin36^(@))/(cos54^(@))+(cos36^(@))/(sin54^(@))=2
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- Prove that (sin36^(@)+cos36^(@))/(cos54^(@)+sin54^(@))=1
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- cos54^(@)cos36^(@)-sin54^(@)sin36^(@)=0
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