In triangle ABC, angle C is straight, BC = 8, cosB = 0.8. Find AB

bystudin | May 31, 2020 | Education

By definition of cosine, cosB = BC / AB = 8 / AB = 0.8.
AB = 8 / 0.8 = 10.
Answer: AB = 10.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.