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Ivenika [448]
3 years ago
13

What is the measure of angle A in the triangle below? TIMED HELP

Mathematics
2 answers:
pashok25 [27]3 years ago
8 0
The sine of angle-A is 0.5
so the angle is 30 degrees.
Anika [276]3 years ago
6 0

Answer:

Option A is correct

30°

Step-by-step explanation:

Using sine ratio:

\sin \theta = \frac{\text{Opposite side}}{\text{Hypotenuse side}}

In a given triangle ACB:

BC = 9 units and AB = 18

Opposite side of angle A = BC = 9 units

Hypotenuse side = AB = 18 units.

By sine ratio:

\sin A = \frac{9}{18}

\sin A = \frac{1}{2}

\sin A = \sin 30^{\circ}

On comparing both sides we have;

\angle A = 30^{\circ}

therefore, the measure of angle A is 30 degree.


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