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1 year ago

Given A= (-3,6) and B=(10,-8) what is the length of AB

1 answer:

8 0

$\text{Given that,}\\\\A(x_1,y_1) = (-3,6)~~ \text{and}~ B(x_2,y_2) =(10,-8)\\\\AB = \sqrt{(x_2-x_1)^2 + (y_2 -y_1)^2}\\\\~~~~~=\sqrt{(10+3)^2 + (-8-6)^2}\\\\~~~~~=\sqrt{13^2 + 14^2}\\\\~~~~~=\sqrt{365}\\\\~~~~~=19.105~ units$

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If x+y=5,x-y=4,find the value of x²-y²

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Answer:

Step-by-step explanation:

→ First find the value of x and y

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x - y = 4

→ Add the equations to cancel out the y's

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→ Minus 4.5 from both sides to isolate -y

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→ Multiply everything by -1

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(a) $\theta=\tan^{-1}(-0.890)$

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