3 years ago

Determine which lines are parallel and/or perpendicular.

Mathematics

1 answer:

krok68 [10]3 years ago

3 0

Answer:

lines f and h are perpendicular because the products of their slopes is -1

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Step-by-step explanation:

First, you need to know

1. Double-angle formula:

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2. Pythagorean identity:

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Back to your problem, replacing the variable by the above:

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