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serg [7]
4 years ago
10

Which pair of lines are perpendicular lines?

Mathematics
1 answer:
liubo4ka [24]4 years ago
8 0
B is the answer I gotchu.
explanation: m1=-4 m2=4 so yes that’s perpendicular.
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steposvetlana [31]
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x2+3x−4x−12
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Common factor from the two pairs

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x2+3x−4x−12

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Rewrite in factored form

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x(x+3)−4(x+3)
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(x−4)(x+3)
(x−4)(x+3)
5 0
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Solve the equation x2 – 12x =9
lord [1]

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Maksim231197 [3]

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7 0
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Read 2 more answers
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Andru [333]

Answer:

1. 0, 2 π , π , 2 π/3 , 4 π/3

2. 7 π/6 , 11 π/6

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1. we want to find the value of theta

Let us represent theta by x for ease of documentation

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sin 2x + sin x = 0

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sin 2x = 2sinxcosx

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2 sin x cos x + sin x = 0

sin x (2 cos x + 1) = 0

sin x = 0

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within the given range;

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2. cos 2 x = 1 + sin x

Mathematically;

cos 2 x = 1-2 sin^2x

let sin x = y

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y = -0.5

sin x = y

sin x = -0.5

x = arc sin (-0.5)

x = 7 π/6 , 11 π/6

4 0
3 years ago
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