dengan a + b + c = 180
PEMBAHASAN :
tan c = tan (180 – (a + b))
= tan 180 derajat-tan(a+b) / 1+tan180.tan(a+b)
= 0-tan(a-b) / 1+0.tan(a+b)
= -tan (a + b)
tan c = -tan (a + b)
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dengan a + b + c = 180
PEMBAHASAN :
tan c = tan (180 – (a + b))
= tan 180 derajat-tan(a+b) / 1+tan180.tan(a+b)
= 0-tan(a-b) / 1+0.tan(a+b)
= -tan (a + b)
tan c = -tan (a + b)