Home
Class 11
MATHS
Prove that: "sin"51^(@)+cos81^(@)=cos21^...

Prove that: `"sin"51^(@)+cos81^(@)=cos21^(@)`.

Text Solution

AI Generated Solution

Promotional Banner

Topper's Solved these Questions

  • TRIGONOMETRY

    MODERN PUBLICATION|Exercise COMPETITION FILE|17 Videos
  • STRAIGHT LINES

    MODERN PUBLICATION|Exercise Chapter test|12 Videos

Similar Questions

Explore conceptually related problems

"sin" 51^(@)+cos 81^(@)=cos 21^(@) .

Prove that :sin51^(0)+cos81^(0)=cos21^(0)

(a) Prove that sin65^(@)+cos65^(@)=sqrt(2)cos 20^(@) (b) Prove that sin47^(@)+cos77^(@)=cos17^(@)

Prove that (sin32^(@)cos58^(@)+cos32^(@)sin58^(@))=1.

Prove that: sin420^(@)cos390^(@)+cos(-300^(@))sin(-330^(@))=1

Prove that (sin36^(@))/(cos54^(@))+(cos36^(@))/(sin54^(@))=2

Prove that (sin36^(@)+cos36^(@))/(cos54^(@)+sin54^(@))=1

Prove that: sin(-420^(@))cos390^(@)+cos(-660^(@))sin330^(@)=1

Prove that: sin(-420^(@))(cos390^(@))+cos(-660^(@))(sin330^(@))=-1

Prove that: (cos40^(@)+cos50^(@))/(sin40^(@)+sin50^(@))=1