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galben [10]
3 years ago
9

HELP ME PLEASE!! Find R and theta with the coordinates (-3,7).

Mathematics
1 answer:
Fofino [41]3 years ago
7 0

Answer:

Since r is the distance from the origin to (x,y), it is the magnitude r=√x2+y2. Alternatively, from the equation (1), one can calculate directly that x2+y2=r2cos2θ+r2sin2θ=r2(cos2θ+sin2θ)=r2.

Step-by-step explanation:

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collect the like terms for y
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this means that the correct answer to your question is -20.
let me know if you have any further questions
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