Answer:
12.9
Step-by-step explanation:
sin 59 = opposite/hypotenuse
opposite is x, the dimension facing the angle 59
hypotenuse is the longest side = 15
sin 59 = x/15
x = 15sin59 = 15 x 0.8572 =12.858 = 12.9 in the nearest tenth
B=5a-4
pick any a valve and replace it with a you will get b
Answer:
360
Step-by-step explanation:
90° angle
90° - existing 42°
the missing angle is 48°