Pertanyaan
tentukan nilai trigonometri berikut!A.sin 1560°,B. cos 300°,C. tan 225°,D.sec 150°
Ditanyakan oleh: USER9467
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Jawaban (82)
sin1560 = sin (4 x 360 + 120) = sin 120 = sin (180-60) = sin 60 = √3/2
cos300 = cos(360-60) = cos60 = 1/2
tan225 = tan(180+45) = tan45 = 1
sec150 = sec (180-30) = 1/-cos30 = 1/-√3/2 = -2√3/3
Semoga membantuu :)
cos300 = cos(360-60) = cos60 = 1/2
tan225 = tan(180+45) = tan45 = 1
sec150 = sec (180-30) = 1/-cos30 = 1/-√3/2 = -2√3/3
Semoga membantuu :)