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2 years ago

PLEASE HELP ME ANSWER THIS What is cos 60?

Mathematics

2 answers:

Anna71 [15]2 years ago

5 0

Answer:

The angle with measure 60° is one of those angles that has a well-known cosine value: cos(60°) its C= 1/2.

Step-by-step explanation:

8_murik_8 [283]2 years ago

3 0

Cos(60°) =[0; 2] and cos^2=[0; 4] so cos 60°=1/2

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Answer:

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Step-by-step explanation:

Given

C = (2,7)

M=(-1,-1) ----- Missing part of question

Required

Determine the coordinates of D

Let the coordinates of D be (x₂,y₂)

We'll solve this question using mid point formula;

$M(x,y) = (\frac{x_1+x_2}{2},\frac{y_1+y_2}{2})$

Where

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Put these values in the formula

$(-1,-1) = (\frac{2+x_2}{2},\frac{7+y_2}{2})$

By comparison;

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$-1 = \frac{2+x_2}{2}$

Multiply both sides by 2

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Subtract 2 from both sides

$-2 -2 = x_2$

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$-1 = \frac{7+y_2}{2}$

Multiply both sides by 2

$-2 = 7 + y_2$

Subtract 7 from both sides

$-2 - 7 = y_2$

$y_2 = -9$

Hence, the coordinates of D is (-4,-9)

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