Answer:
a) A triangle which the angles ratio is 1 : 2 : 3 is a 30º - 60º - 90º right triangle.
b) The shortest side is opposite to the shortest angle. So, we can calculate it using sin 30º.



Answer:
B
Step-by-step explanation:
It could be 443, try simplifying to the nearest hundreaths, hope this helps!
Answer:
106°
Step-by-step explanation:
Supplementary angles add up to 180°
180°- 74°
= 106°