Example: In Figure 4-18, side a of the triangle equals 175, angle A equals 76 30' 00", and angle B
equals 48 45' 00". Find angle C and sides b and c.
Figure 4-18. Case I
Solution: Find the value of angle C by subtracting the sum of angles A and B from 180.
180€ - (76 30' 00" + 48 45' 00") = 54 45' 00" = C
Then, using the sine law, solve for the two unknown sides.
Also find side c.
EN0591
4-26