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xenn [34]
3 years ago
8

Find an equation equivalent to r = 10sin ø in rectangular coordinates.

Mathematics
1 answer:
kherson [118]3 years ago
4 0

Answer: x^2 + y^2 -10y = 0

Step-by-step explanation:

Cartesian coordinates, also called the Rectangular coordinates, isdefined in terms of x and y. So, for the problem θ has to be eliminated or converted using basic foundations that are described by the unit circle and the right triangle trigonometry.

r= 10sin(θ)

Remember that:

x= r × cos(θ)

y= r × sin(θ)

r^2= x^2 + y^2

Multiply both sides of the equation by r. This will give:

r × r = 10r × sin(θ)

r^2 = 10r × sin(θ)

x^2 + y^2= 10r × sin(θ)

Because y= r × sin(θ), we can make a substitution. This will be:

x^2 + y^2= 10y

x^2 + y^2 -10y = 0

The above equation is the Rectangular coordinate equivalent to the given equation.

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Given:

m \angle A B D=96^{\circ}

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Answer:

BD = 35

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Using Pythagoras' identity in both triangles.

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BD² = 1225 ( take the square root of both sides )

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