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kodGreya [7K]
3 years ago
6

In ∆ABC, which ratio equals cos C? A. B. C. D.

Mathematics
1 answer:
Bond [772]3 years ago
5 0

SOH CAH TOA

CAH

Cosine = Adjacent / Hypotenuse

∆ABC, where lets say B is the right angle.

cos C = adjacent/hypotenuse = BC/AC

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Leona [35]

The value of the voltage is 18 - j volts if the current in a circuit is 3 + j2 amps and the resistance is 4 - j3 ohms option (c) is correct.

<h3>What is a complex number?</h3>

It is defined as the number which can be written as x+iy where x is the real number or real part of the complex number and y is the imaginary part of the complex number and i is the iota which is nothing but a square root of -1.

We have:

The current in a circuit is 3 + j2 amps and the resistance is 4 - j3 ohms.

As we know,

V = IR

V = (3 + j2)(4 - j3)

\rm V=\left(3\cdot \:4-2\left(-3\right)\right)+\left(3\left(-3\right)+2\cdot \:4\right)j

j² = -1 (complex part)

After simplification:

V = 18 - j  volts

Thus, the value of the voltage is 18 - j volts if the current in a circuit is 3 + j2 amps and the resistance is 4 - j3 ohms option (c) is correct.

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brainly.com/question/10251853

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6 0
2 years ago
7
emmainna [20.7K]

It has a 0.6-mile-per-minute speed limit.

<h3>What is the distance?</h3>

Distance is defined as the product of speed and time.

Given that the distance traveled in 3 seconds is 3/100 miles.

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We must first determine the distance traveled in 1 second in order to get the distance traveled in 1 minute.

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8 0
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Step-by-step explanation:

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3 years ago
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tester [92]
The midpoint of a line segment is the average of the endpoint's coordinates, mathematically:

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In this case:

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