Question

Na figura seguinte, sen -0= ⅘, calcule o valor de m e n.

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Answer 1

sen 0 = 4/5

sen 0 = 8 /m

4/5 = 8/m

4m = 40

m = 10

8^2 + n^2 = 10^2

64 + n^2 = 100

n^2 = 36

n = 6

m + n = 10 + 6 = 16