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Verified answer
Cos 96 + sin 96. tan 48 == cos 96 + sin 96 . sin 48/cos 48
= (cos 96. cos 48 + sin 96. sin 48)/(cos 48)
= cos (96-48) / cos 48)
= cos 48/cos 48
= 1
Verified answer
BismillahirrahmanirrahimSOAL=cos 96° + sin 96° . Tan 48°
JAWABAN=1
PENYELESAIAN=
Jadikan sin 96 = 2 sin 48 cos 48
Serta cos 96 = 1 - 2 sin^2 48
misal 48°=x
cos2x+sin2x.tanx
1-2(sinx)^2+2sinxcosx.(sinx/cosx)
1-2(sinx)^2+2(sinx)^2
=1