Determine the angle  M in ΔMNO with side measures 0.8 m = n, o = 60 cmand m=100 cm

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aruv | High School Teacher | (Level 2) Valedictorian

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In triangle MNO ,


m=100 cm

n=.8 x m=8 x 100 =80cm

By cos angle formula






M is right angle



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