In triangle ABC, angle C = 90 degrees, cosA = 0.6, BC = 12. Find AB

AB = 12,

cos α = 0, 6.

angle C = 90 degrees.

cos α = BC / AB,

0, 6 = 12 / AB,

AB = 12: 0, 6,

AB = 20.

Answer: AB = 20.



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