Question

Calculate the length b to two decimal places.
15
106°
12
B

Answer 1

Answer:

D

Step-by-step explanation:

Using law of cosines,
b^2=c^2+a^2-2accosB
b=√(144+225-2*12*15*cos106)
b=√(369+99.23)
b=√468.23
b=21.64