Question

In the right angled triangle it is given that angle A is an acute angle and that ranA=5/12.Find the value of:cos A

Answer 1

Answer:

cos A =12/13

Step-by-step explanation:

given that tan A = 5/12

tan A = p/b

p= 5

b = 12

so h^2 = p^2 + b^2

=> h =13

cos A =b/h

=> cos A = 12/ 13