y = ( x + 9 )^2 - 2
................................
................................
90-n=3n
90=4n
22.5=n
Final answer 22.5
AC = √(40²-12²) = √(1600-144) = √1456 = 4√91
tanA = 12/4√91 = 3/√91 = 3√91/91
option а.
Answer:
B. 41
Step-by-step explanation:
