Question
Find the size of angle C if angle A is 50 degrees. You have been give that triangle ABC AC = 8 cm and AB = 6 cm.
Answers
wisdom c banda
50+C=180 C=180-50 C=130
Steve
Nope. The A+B+C=180
Note that the sides
AC = b
AB = c
Use the law of cosines to get
a^2 = b^2+c^2-2bc cosA
Now, having a, you can use the law of sines to get A:
sinA/a = sinC/c
Note that the sides
AC = b
AB = c
Use the law of cosines to get
a^2 = b^2+c^2-2bc cosA
Now, having a, you can use the law of sines to get A:
sinA/a = sinC/c