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Nikitich [7]
3 years ago
12

According to the law of reflection, if the angle of incidence of an incoming ray

Mathematics
2 answers:
viktelen [127]3 years ago
5 0

Answer:

B. 46°

Step-by-step explanation:

\underline{ \bf{LAWS \:  OF \:  REFLECTION}}

  • Angle of reflection (angle between reflected ray and the normal to the reflecting surface) equals to the angle of incidence (angle between incident ray and normal).

\boxed{\bf{\angle i = \angle r}}

  • The incident ray, reflected ray lie in the same plane with normal to the reflecting surface.
Natalija [7]3 years ago
4 0

Answer:

The answer is the option B, which is: 46 degrees.  

The explanation for this problem is shown below:

1. According to the Law of reflection, the angle of incidence is equal to the angle of reflection.

2. Therefore, if Ф1 is the angle of incidence and Ф2 is the angle of reflection, you have:

Ф1 = 46 degrees

Ф1 = Ф2

Ф2 = 46 degrees

So, the answer is the option mentioned before.

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The area of a triangle is 56.4cm and the base is 12cm.What is the height of the triangle?
ale4655 [162]

area of a triangle = 1/2 base x height

56.4 = 1/2 x 12 x height

56.4 = 6 x height

height = 56.4 /6 = 9.4cm


7 0
3 years ago
What is -4-(-12)? I don't know if you add them or subtract.
algol [13]
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4 0
3 years ago
Solve the given system of equations2y=x+93x-6y=-15
attashe74 [19]

Answer:

No solutions

Explanation:

The given system of equations is

2y = x + 9

3x - 6y = -15

To solve the system, we first need to solve the first equation for x, so

2y = x + 9

2y - 9 = x + 9 - 9

2y - 9 = x

Then, replace x = 2y - 9 on the second equation

3x - 6y = -15

3(2y - 9) - 6y = -15

3(2y) + 3(-9) - 6y = -15

6y - 27 - 6y = -15

-27 = -15

Since -27 is not equal to -15, we get that this system of equation doesn't have solutions.

5 0
11 months ago
Will mark first answer brainliest
babymother [125]

Answer:

Step-by-step explanation:

B. -3

Hope that helps!

8 0
3 years ago
Read 2 more answers
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