Home
Class 11
MATHS
cos^2A+cos^2B+cos^2C=1 - cosAcosBcosC pr...

`cos^2A+cos^2B+cos^2C=1 - cosAcosBcosC` prove that

Promotional Banner

Similar Questions

Explore conceptually related problems

cos^(2)A+cos^(2)B+cos^(2)C=1-cos A cos B cos C prove that

If A+B+C=180^@ ,prove that cos^2A+cos^2B+cos^2C=1-2cos Acos B cos C .

If A + B + C =180^@ , prove that : cos^2 A+ cos^2 B+cos^2 C=1-2 cos A cos B cosC .

If A+B+C = pi , prove that : cos2A +cos2B +cos2C =-1-4cosAcosBcosC .

If A+B+C = pi , prove that : cos2A +cos2B +cos2C =-1-4cosAcosBcosC .

If A+B+C=180^(@) then prove that cos^(2)A+cos^(2)B+cos^(2)C=1-2cosAcosBcosC

Prove that in triangle A B C ,cos^2A+cos^2B-cos^2C=1-2sinAsinBcosCdot

Prove that in triangle A B C ,cos^2A+cos^2B-cos^2C=1-2sinAsinBcosCdot

Prove that in triangle A B C ,cos^2A+cos^2B-cos^2C=1-2sinAsinBcosCdot