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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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In the figure, OA is a diameter of the smaller circle and O is the centre of the larger circle. Find the
Burka [1]

Answer:

942 6/7 cm²

Step-by-step explanation:

Since O = Center of bigger circle, OA = Radius of bigger circle.

∴ Area of smaller circle - Area of bigger circle = Area of shaded part.

∴ Area of smaller circle = 22/7 × 10²

                                       = 22/7 × 100

                                       = 2200/7

                                       = 314 2/7 cm²

∴ Area of bigger circle = 22/7 × 20 ²

                                      = 22/7 × 400

                                      = 1257  1/7 cm²

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5 0
3 years ago
Please, giving all my points.
lutik1710 [3]

Answer: -4x-34y-32

(I think this is right but I am not completely sure... if its not I am sorry :/ )

Step-by-step explanation:

First Way:

48 (1/4x - 1/3y - 2/6x - 3/8y - 2/3)

48[(6/24x-8/24x)-(8/24y+9/24y)-2/3]

48(-2/24x-17/24y-2/3)

48(-1/12x-17/24y-2/3)

-4x-34y-32

Second Way:

48 (1/4x - 1/3y - 2/6x - 3/8y - 2/3)

12x-16y-16x-18y-32

-4x-34y-32

6 0
3 years ago
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