Please help! The Pythagorean Identity states that:
(sin x)2 + (cos x)2 = 1
Given sin 0 = 5/6, find cos 0.
cos 0 =
Simplify the fraction.

cos θ =

Step-by-step explanation:

Substitute sin θ = into the identity

( )² + (cos θ )² = 1

+ (cos θ )² = 1

(cos θ )² = 1 - = ( take the square root of both sides )

cos θ = =

the answer is b: 18

step-by-step explanation:

use the pythagorean theorem to .

a^2+b^2=c^2

plug 18 for "r"

the 2 legs are 18 and 24

18^2+24^2=c^2

324+576=c^2

900=c^2

c=30

30-12=18

18 is the radius

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