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cos 215 = -cos 35 = -0,819
tan 325 = -tan 35 = -0,700
jadi 0,574 +(-0,819) -(-0,700) = 0,455
7) x=3,r/sisi miring = 4,y = -√7 karena dikuadarn IV
jadi sinθ =-√7/4 dan tanθ = -√7/3
cuma bisa bantu itu saja