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11Alexandr11 [23.1K]
3 years ago
7

Given: ∆ABC is isosceles m∠ACB = 120°, CM = 12 m∠BMC = 60° Find: AB

Mathematics
1 answer:
Vlad1618 [11]3 years ago
5 0

Answer:

36

Step-by-step explanation:

As the triangle ABC is isosceles so A and B has the same measures

And, the sum of the angles is 180°.

Therefore 2 times the measure of angle

B plus  120° = 180°,

So, the equation:

2x + 120 = 180

So x = 30

Now we have to apply the law of sin on the triangle BMC as shown below:

\frac{12}{\sin30} = \frac{BC}{\sin 60}

Now calculate for BC

BC = 20.7

We use the law of sin again i.e

\frac{AB}{\sin 120} = \frac{20.7}{\sin 30}

So AB is 36

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According to Ohm's Law, in an electrical circuit the voltage V (in volts) is related to the current I (in amps) and the resistan
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Answer:

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