3 years ago

Prove or disprove that the point (3, 2) lies on the circle centered at (-1. -1) and containing the point (4,-1)

Mathematics

1 answer:

melisa1 [442]3 years ago

7 0

Need a picture of the plot

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Step-by-step explanation:

The range of a projectile is given by :

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Put R = 20 m, u = 15 m/s and finding the value of angle of projection

So,

$R=\dfrac{u^2\sin2\theta}{g}\\\\\sin2\theta=\dfrac{Rg}{u^2}\\\\\sin2\theta=\dfrac{20\times 9.8}{15^2}\\\\\sin2\theta=0.871\\\\2\theta=\sin^{-1}(0.871)\\\\2\theta=60.57\\\\\theta=30.285^{\circ}$

So, the required angle of projection is equal to $30.285^{\circ}$ .

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