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2 years ago

15

The point (3, -4) is on the terminal side of an angle Θ . What is cos Θ

1 answer:

Sergio039 [100]2 years ago

6 0

Point=(3,-4)=(x,y)→x=3, y=-4
<span>cos Θ=?

</span><span>cos Θ=x/r

r=sqrt(x^2+y^2)
r=sqrt( (3)^2+(-4)^2 )
r=sqrt( 9+16)
r=sqrt(25)
r=5

</span>cos Θ=x/r
cos Θ=3/5

Answer: cos Θ=3/5

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Step-by-step explanation:

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This means that:

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$a_n=(-3)\times a_{n-1}$

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