cot 70+ 4 cos 70 is : without T table: sir please tell how to solve without table Share with your friends Share 1 Neha Sethi answered this Dear student Identities used:1)sin2x=2sinxcosx2)sinA+sinB==2sinA+B2cosA-B23)cosA+cosB=2cosA+B2cosA-B2 Regards 14 View Full Answer
