The ratio is 3:2, hope it helps
Answer:
a = 49°
Explanation:
You use the rule ‘exterior angle of a triangle’ which states that the exterior angle is equal to the sum of the two opposite interior angles.
To put it mathematically:
a + a = a + 49° (Ext angles of triangle)
a = a - a + 49°
a = 49°
We can use the tangent rule for this problem because the opposite x is unknown and adjacent side 10 is knwon. Since,


Since tan 35°=0.474
Multiplying each sides by 10.
4.74=x
x=4.7 (Rounded to nearest tenth)