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AlekseyPX
3 years ago
15

In the right ABC with C=90,A=75 and AB=12cm. Find the area of ABC

Mathematics
1 answer:
Ganezh [65]3 years ago
6 0

Answer:

18 cm^2

Step-by-step explanation:

The legs of a right triangle are the base and height of the triangle.

Since C is a right angle, AB is the hypotenuse.

AC and BC are the legs and the base and height.

sin 75 = BC/12

BC = 12 sin 75

cos 75 = AC/12

AC = 12 cos 75

area = bh/2 = (12 sin 75)(12 cos 75)/2

area = 18 cm^2

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Ostrovityanka [42]

Answer:

Step-by-step explanation:

1- Un avión se desplaza a 720 km/h.¿Que tiempo tarda en recorrer 120.000.000 cm?

x = 120.000.000 cm = 1200.000 m (Dividir para 100)

v = 720 km/h = 200 m / s (Dividir para 3,6)

x = v*t

t = x / v

t = 12000000 / 200

t = 6000 segundos = 100 minutos = 1 hora 40 minutos

2-Un auto recorre 430 km en 6 h 30 min 18 s.¿Cual es su velocidad en km/h?

x = 430 Km = 430000 m

t = 6 h 30m 18 s

t = 6 * 3600 + 30 * 60 + 18

t = 21798 s

v = x / t

v = 430000 / 21798

v = 19,72 m/s = 71 km/h (Multiplica por 3,6)

3-Una moto se desplaza a 144 km/h durante 820 min. calcular la distancia recorrida

v = 144 km/s = 40 m/s

t = 820 min * 60 = 49200 s

x = v*t

x = 40 * 49200

x = 1968000 m = 1968 Km

4-un atleta corre a 9 m/s.¿Cuanto tiempo tarda en recorrer 10,9 Km?

v = 9 m/s

x = 10,9 km = 10900 m

t = x / v

t = 10900 / 9

t = 1211,11 s = 20 minutos 11 segundos

5 0
3 years ago
5a + 7, for a = 20 please help me
fenix001 [56]
5 * 20 +7= 67..................
3 0
3 years ago
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GOD BLESS YOU!!!!!!!!!!!!!!!!<br><br>​
Gnom [1K]

Answer:

GOD BLESS YOU TOO!!!

Step-by-step explanation:

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3 years ago
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Question related to Traingle and Parallelogram. Please solve all C D and E​
Westkost [7]

Answer:

simple

Step-by-step explanation:

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4 0
3 years ago
A bird drops a stick from the top of Miami Tower. The height of the stick after x seconds is given by f(x) = 625 - 16x^2.
Leni [432]

ANSWER

The maximum value is 625

EXPLANATION

The height of the stick that the bird dropped is modeled by the function;

f(x) = 625 - 16x^2

This function is already in the vertex form.

Let me rewrite it clearly for you to see.

f(x) = - 16(x - 0)^2 + 625

When we compare this to;

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This is the maximum value on the graph of this function.

3 0
3 years ago
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