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Find x in these 45 - 45 - 90 triangles. x= () square root ()

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you whats SOH CAH TOA?
Cos(theta) = adjacent/hypothenus
therefore Cos(45) = x/8

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Other answers:

you can use the graphic calculator. make sure it is on radian mode
@AravindG any chance of helping me?
Cos(45) = x/8 solve for x
do i just multiply (45) and 8? and find the square root from there
nope cos 45 is 1/root(2)
so you multiply 1/root{2} with 8
1 square root of 2 is 1.4
is that right?
so do i just multiply 70 and 8?

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