Question

Can someone help me understand how to do this please!

Use the triangle at the right. Find the length of the missing side.
1. a = 16, b = 63 2. b = 2.1, c = 2.9

Answer 1

Directrix, it should be

a^2 + b^2 = c^2

16^2 + 63^2 = c^2

solve for c

Answer 2

Thanks @jim_thompson5910

Answer 3

np

Answer 4

SO c = 4225? @jim_thompson5910

Answer 5

that's c^2, not c

Answer 6

so c^2 = 4225

Answer 7

c^2 = 4225

c = ??

Answer 8

C = 65? @jim_thompson5910

Answer 9

yep you got it

Answer 10

Thank you. Can I work out b and show you what I get?

Answer 11

@jim_thompson5910

Answer 12

sure go for it

Answer 13

would the equation be c^2 - b^2 =a^2? @jim_thompson5910

Answer 14

yes you go from

a^2 + b^2 = c^2

to

a^2 = c^2 - b^2

Answer 15

so c^2 - b^2 = a^2

2.9^2 - 2.1^2 = a^2

a^2 = 4^2

a = 2 @jim_thompson5910

Answer 16

good

Answer 17

Thank you!! @jim_thompson5910

Answer 18

you're welcome