1. 16.64
a^2+b^2=c^2
pr^2=pq^2+qr^2
pr^2=14^2+ 9^2
pr^2=196+81
pr= sqr root of 277
16.64
2. 11.31
c^2-a^2=b^2
18^2- 14^2=b^2
b^2=324-196
b=sqr root of 126
b=11.31
hope it ! (btw im in connections academy to, good luck! )
or
sin y = 7/q
7 is the opposite side length, q is the hypotenuse
tan y = 7/r
7 is the opposite side length, r is the adjacent side length
using sohcahtoa ^^^^
cos y = adjacent/hypotenuse
cos y = r/q