Answer:
What question do you need help on
Step-by-step explanation:
..
You could construct one triangle.
All triangles add up to 180
So, if you add all the given angles together (10+80+90=180)
Answer:
4 1/4
Step-by-step explanation:
1/2 + 1/2 + 2= 3
3 + 1 + 1/4= 4 1/4
Answer:
Step-by-step explanation:
sin(-430)=-sin(430)=-sin(360+70)=-sin 70