Home
Class 12
MATHS
If A+B+C = 90^@ then cos^2A+ cos^2B + co...

If `A+B+C = 90^@` then `cos^2A+ cos^2B + cos^2C= 2 + K sinA sinB sinC` then `K=`

Promotional Banner

Similar Questions

Explore conceptually related problems

cos^(2)A+cos^(2)B-cos^(2)C=1-2sinA sinB cosC

If A+B+C= pi/2 , show that : cos^2 A + cos^2 B + cos^2 C = 2 + 2 sinA sinB sinC .

If A+B+C= pi/2 , show that : cos^2 A + cos^2 B + cos^2 C = 2 + 2 sinA sinB sinC .

If A+B+C=270^(@) then cos 2A+cos2B=cos2C+4sinA sinB sinC=

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

If A+B+C=90^(@) then (cos 2A+cos 2B+cos 2C-1)/(sin A sin B sin C)=

If A+B+C=270^@ , then cos2A+cos2B+cos2C+4sinAsin B sinC=

If A+B+C=180^0 , prove that : cos^2 A+cos^2 B-cos^2 C=1-2sinA sinB cosC

If A + B + C =pi , prove that : cos 2A - cos 2B- cos 2C= -1+4 cos A sinB sin C .