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Pachacha [2.7K]
4 years ago
12

Find the exact value of 75(degrees); leave answer in simplest radical form. Enter terms under the radical in number order.

Mathematics
1 answer:
podryga [215]4 years ago
5 0

Answer:

sin75º=sin(30)º+45º)

=sin 30 cos 45+cos 30 sin 45

=1/2*√2/2+√3/2*√2/2

=√2/4+√6/4

=(√2+√6)/4

Check with calculator:

sin 75º≈0.9659

exact value=(√2+√6)/4≈0.9659

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62 bunches of carnations and 79 bunches of roses 
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3 years ago
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The radius of a circle is 2 millimeters. What is the circle's area?
mote1985 [20]

Answer:

12.56 mm²

Step-by-step explanation:

A=\pi r^{2}

Plug the given values into the area equation

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I hope this helps!

6 0
3 years ago
19. The temperatures at sunrise and sunset<br> are shown in the table
Likurg_2 [28]

The temperature change on the second day is greater than the temperature change on the first day.

<h3>What is temperature change?</h3>

The term temperature change refers to the difference in the temperature between the sunrise and the sunset. The temperature at sunrise and sunset are shown in the table attached to this answer.

The change in temperature on the first day is;

13.49 - (-11.31) = 24.80

The change in temperature on the second day is;

25.25 - (-7.69) = 32.94

Thus, the temperature change on the second day is greater than the temperature change on the first day.

Learn more about temperature change:brainly.com/question/11186605

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8 0
2 years ago
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Answer:

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8 0
3 years ago
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​ What are the zeros of the function?​ f(x)=x2+17x+72
Semmy [17]
In order to find zeroes of a function, we will probably want to use our quadratic formula.

-b±√b^2-4(a)(c)/2a 

If we know our values, we can plug it in. 

Our values:

A=1 (Since there is no number in front of x, it is an assumed 1)
B=17
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Now, We can plug it into our formula.

BE SURE TO PUT PARENTHESIS AROUND ALL TERMS!

-(17)±√(17)^2-4(1)(72)/2(1)

Now we can type it into a calculator! 

When we plug it into the formula. It gives us two real solutions (or zeroes) which are represented as:

-8 & -9.

4 0
3 years ago
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