Home
Class 11
MATHS
सिद्ध कीजिए कि (cosA+cosB)^(2)+(sinA+s...

सिद्ध कीजिए कि
`(cosA+cosB)^(2)+(sinA+sinB)^(2)=4cos^(2)((A-B)/(2))`

Promotional Banner

Similar Questions

Explore conceptually related problems

Prove that: (cosA+cosB)^(2)+(sinA+sinB)^(2)=4cos^(2)(A-B)/2

Prove that: (cosA+cosB)^(2)+(sinA+sinB)^(2)=4cos^(2)(A-B)/2

Prove that, (cosA-cosB)^(2)+(sinA-sinB)^(2)=4sin^(2)((A-B)/(2))

Prove that: (cosA-cosB)^(2)+(sinA-sinB)^(2)=4sin^(2)(A-B)/(2)

Prove that (cosA-cosB)^2+(sinA-sinB)^2=4sin^2((A-B)/2)

Prove that: (cosA+cosB)^2+(sinA-sinB)^2=4cos^2((A+B)/2) .

(cosA+cosB)^2+(sinA-sinB)^2 is equal to

If cosA+cosB+cosC=0=sinA+sinB+sinC then cos^(2)((A-B)/2)=

If (cosA)/(cosB)=n and (sinA)/(sinB)=m,then (m^(2)-n^(2))sin^(2)B=

If (cosA)/(cosB)=n and (sinA)/(sinB)=m,then (m^(2)-n^(2))sin^(2)B=