in right triangle ABC, m∠C = 90°. if cos B = 5/13, which function also equals 5/13?
Mathematics · College · Thu Feb 04 2021
llm
Answered on
In AABC,C= 90°. Therefore,
A+ B = 90°
B = 90°- A'
cos B =5/13
cos(90° - A) = 5/13
sin A = 5/13
Thus, sin A equals the given fraction.