Nilai dari sin 7/6π + cos 11/3π – Tan 15/4 π =
Jawaban:
Sin 7/6 π = Sin 210 = -½
Cos 11/3 π = Cos 660 = Cos (660-360) = Cos 300 = ½
Tan 15/4 π = Tan 675 = Tan (675-360) = Tan 315 = -1
sin 7/6π + cos 11/3π – Tan 15/4 π
-½+½-(-1) = 1
Nilai dari sin 7/6π + cos 11/3π – Tan 15/4 π =
Jawaban:
Sin 7/6 π = Sin 210 = -½
Cos 11/3 π = Cos 660 = Cos (660-360) = Cos 300 = ½
Tan 15/4 π = Tan 675 = Tan (675-360) = Tan 315 = -1
sin 7/6π + cos 11/3π – Tan 15/4 π
-½+½-(-1) = 1