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iogann1982 [59]
3 years ago
13

What is the equivalent trig ratio to cos 18 ?

Mathematics
1 answer:
Anika [276]3 years ago
3 0

Answer:

\sin{72^\circ}

Step-by-step explanation:

In a right triangle, the two acute angles are complementary--they add up to 90 degrees.

Cosine is defined as the adjacent side divided by the hypotenuse.  In the attached picture,  \cos{18^\circ}=\frac{a}{h}.

The other acute angle is 90 - 18 = 72 degrees.  Looking at just that angle, side <em>a</em> is the opposite side.  So the ratio a/h is opposite over hypotenuse -- the sine ratio.

Therefor, \cos{18^\circ} = \sin{72^\circ}

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Which is the solution set of the inequality 15y-9&lt;36?
AnnyKZ [126]

Answer:

The solution set is;

y < 3

This means the values of the real numbers set that are less than 3 in value

Step-by-step explanation:

Here, we want to get the solution set of the inequality

what we have to do is to get the value of y

We have this as;

15y < 36 + 9

15y < 45

y < 45/15

y < 3

3 0
3 years ago
X y/x-y=1/2 solve for y
umka2103 [35]

y will equal negative 1  cause one half over 2 plus y equals negative 1


5 0
3 years ago
When Brandon went bowling, it cost $4.95 per game, plus a one-time fee to rent the shoes. Brandon played 5 games and paid $32. W
igomit [66]

Answer:

The linear equation used to find the cost to rent the shoes is 24.75+x=32

Cost to rent the shoes is $7.25.

Step-by-step explanation:

Given:

Cost of per game of bowling = $4.95

Number of games played = 5

Total money paid = $32

We need to find the cost to rent the shoes.

Solution:

Let the cost to rent the shoes be 'x'.

So we can say that;

Total money paid is equal to sum of Cost of per game of bowling multiplied by Number of games played and cost to rent the shoes.

framing in equation form we get;

5\times4.95+x=32\\\\24.75+x=32

Hence The linear equation used to find the cost to rent the shoes is 24.75+x=32

On solving the above equation we will find the value of 'x'.

Now we will subtract both side by 24.75 we get;

24.75+x=32-24.75\\\\x= \$7.25

Hence Cost to rent the shoes is $7.25.

4 0
3 years ago
Hi, I need help with this story problem.
Trava [24]

Answer: 7.5 cups of sugar.

Step-by-step explanation:

Add all of the above:

2+1.5+0.5+3+1.5= <u>8.5 cups of sugar</u>

<u></u>

Since Zach only needs 1 cup of sugar, subtract 1 from 8.5.

Therefore, your answer is <u>7.5 cups of sugar.</u>

3 0
3 years ago
Peters mom gave him a $10 bill he purchased a magazine for $4.50 and the tax was 6% how much change did peter get
never [62]

Answer:

$5.50

Step-by-step explanation:

10 - 4.50 = 5.50

7 0
2 years ago
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