No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution
The correct option is D G.E = sin2α+cos(α+β)[cos(α+β)+2sinαsinβ] = sin2α+cos(α+β)[cosαcosβ−sinαsinβ+2sinαsinβ] = sin2α+cos(α+β)[cos(α−β)]=sin2α+cos2β−sin2α=cos2β