coolgirl10020031
03.04.2020 •
Mathematics
Given the following use a Pythagorean identity to find tan(0) if 0 is in quadrant II
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Ответ:
tan θ = -√7/3
Step-by-step explanation:
We have the equation as following:
=> (cos x)^ 2 = 1 - (sin x)^2
So that:
(cos θ)^2 = 1 - (sin θ)^2 = 1- (√7/4)^2 = 1 - 7/16 = 9/16
=> (cos θ)^2 = 9/16
We have the equation:
=> (tan θ)^2 = 1/(cos θ)^ 2 - 1 = 1/(9/16 ) - 1 = 16/9 - 1 = 7/9
=> tan θ = √7/3 or tan θ = -√7/3
As θ is in the quadrant II, so that tan θ would have the negative value
=> tan θ = -√7/3
Answer C is correct
Ответ:
These are the correct answers: -2.4, 0.8, 0.2, 0.9, and then 1.6
Step-by-step explanation:
I took the test online at k12 and when I reviewed it, it said were the answers:)
Hope this helped!!
Have a wonderful day!:))
Also, Can I Pls get brainliest?