sin 120 + cos 135 + tan 240
Matematika
dwiindri033
Pertanyaan
sin 120 + cos 135 + tan 240
1 Jawaban
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1. Jawaban adamoks22
sin(180-60)+cos(180-45)+tan(180+60)
=sin60-cos45+tan60
=½akar(3)-½akar(2)+akar(3)
=(3/2)akar(3)-½akar(2)
=½(3akar(3)-akar(2))