Answer:
1.90 degrees
2. 90-28=62 degrees
3.c=sq.root of 12 square+5square
c=sq.root of 144+25
=sq.root of 169
=13
4.10 square= 6 square+ b2
100=36+b2
100-36=b2
64=b2
sq.root of 64=b
b=8
