Answer:
b = 2.28571428571 or 2.29 or 2 2/7 or 16/7
Step-by-step explanation:
b + 8b - 5 - 2b = 16
b + 8b - 5 - 2b + 5 = b + 8b - 2b
b + 8b = 9b - 2b = 7b
7b = 16
7b / 7 = b
16 / 7 = 2.28571428571 or 2.29 or 2 2/7 or 16/7
yes
yes they are :)))))
sinA=sin(90-B)
sinA=90_B
now,A+B
=90
-a-13
-2 * (a+3)
-2a - 6 -7 + a
-2a+a = -a
-6-7= -13
-a - 13
