seyerallebasi seyerallebasi

10-05-2017
Mathematics

contestada

if sin 0 = 15/17 use pythagorean identity to find cos 0

Respuesta :

ghanami ghanami

11-05-2017

hello :
sinθ = 15/17
use pythagorean identity : cos²θ +sin² θ = 1
cos²θ = 1 - sin² θ
cos²θ = 1-(15/17)²
cos²θ = 1- 225/289
cos²θ = 64/289
cos²θ = (8/17)²
cosθ = 8/17 or -8/17

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joegoley1 joegoley1

09-05-2019

Answer:

Cosine (theta) = plus or minus 8/17

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