Question

Find x in these 45 - 45 - 90 triangles.

http://tinypic.com/r/rtg4ty/5
x= () square root ()

Answer 1

you whats SOH CAH TOA?

Answer 2

Cos(theta) = adjacent/hypothenus

Answer 3

therefore Cos(45) = x/8

Answer 4

you can use the graphic calculator. make sure it is on radian mode

Answer 5

@AravindG any chance of helping me?

Answer 6

Cos(45) = x/8

solve for x

Answer 7

do i just multiply (45) and 8? and find the square root from there

Answer 8

nope

cos 45 is 1/root(2)

Answer 9

so you multiply 1/root{2} with 8

Answer 10

1 square root of 2 is 1.4

Answer 11

is that right?

Answer 12

nope

Answer 13

1/root(2)=1/1.414=0.707

Answer 14

so do i just multiply 70 and 8?