Trig: A triangle has a side of length 1, a side of length 4 and an angle of 30◦

3. A triangle has a side of length 1, a side of length 4 and an angle of 30◦.

(a) Explain carefully why there are precisely two possible such triangles. [7 marks]

(b) In each case determine the third side length and the other two angles of the triangle.[28 marks]

so i calculated the two angles for triangle 1 and found them to be 7.18 and 142.82. ive tried calculating the angles for triangle 2 and keep getting a negative angle, not sure what im doing.

Please help.