Question

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Answer 1

2) x = arccos((6/2) / 9) = arccos(1/3) = 70,52878 градуса.

3) x = 2arctg(12/16) = 2arctg(3/4) = 2*36,8699 = 73,7398 градуса.

4) ) x = arctg(14/22) - arctg(7/22) = 32,4712 - 17,6501 = 14,8211 градуса.