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25. a. If mZl = 23, find m.27.b. If m/l = k, find nIL7.a3114
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25. a. If mZl = 23, find m.27.b. If m/l = k, find nIL7.a3114

25. a. If mZl = 23, find m.27.b. If m/l = k, find nIL7.a3114-example-1
User Yvanscher
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a.)
m<1 = m<2 = 23
But m<1 + m<2 + m<3 = 180
i.e. 23 + 23 + m<3 = 180
m<3 = 180 - 46 = 134

m<5 = m<6
But, m<5 + m<6 = m<4 = 134
m<5 = m< 6 = 134/2 = 67

m<5 + m<7 + m<2 = 180
67 + m<7 + 23 = 180
m<7 = 180 - 90 = 90 degrees

User Nurhan
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