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