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Doss [256]
3 years ago
13

Determine the exact value of sin 150 degrees

Mathematics
1 answer:
avanturin [10]3 years ago
7 0

Answer:

\frac{1}{2}

Step-by-step explanation:

Use the identity:

\sin(180-\theta)=\sin \theta

We were given:\sin 150\degree

We can rewrite this as:

\sin(180-30)\degree=\sin 30\degree

On the unit circle, \sin 30\degree=\frac{1}{2}

This implies that:

\sin(180-30)\degree=\sin 150\degree=\sin 30\degree=\frac{1}{2}

Therefore the exact value of \sin 150\degree is \frac{1}{2}

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PLEASE HELP I WILL GIVE BRAINLIEST TO THE FIRST PERSON TO ANSWER
jekas [21]

Answer:

1. 2x = 60

x = 30

y = x - 5 = 30 - 5 = 25

2. x= 11

4 0
3 years ago
What is the domain for y=x^2-3
artcher [175]
The domain is hope this helped:)

3 0
2 years ago
Evaluate the expression when c=6 and d=5.<br> d+ 8c
Elza [17]

Answer:

53

Step-by-step explanation:

when c=6 and d=5 we want to substitute the variables with the numbers in the equation so we'll have

(5) + 8(6)

after evaluating we come up with the answer 53

3 0
2 years ago
HELP!!!
olga55 [171]

Answer:

  a) 236/100 = 2.36

  b) 101/100 = 1.01

  c) 814/100 = 8.14

Step-by-step explanation:

The divisor in each case is already a factor of 100, so multiply the numerator and denominator by the number that will make the denominator 100. Then add 100 times the integer to the numerator of the fraction.

a) 2 9/25 = (200 +9·4)/(25·4) = 236/100 = 2.36

b) 1 1/100 = (100 +1)/100 = 101/100 = 1.01

c) 8 7/50 = (800 +7·2)/(50·2) = 814/100 = 8.14

____

Since each of these fractions has a denominator of 100, the decimal can be written by putting the least significant digit of the numerator in the hundredths place of the decimal number.

For example, for 236/100, putting 6 in the hundredths place puts 3 in the tenths place and 2 in the units place for a decimal number of 2.36.

5 0
3 years ago
Which expression has exactly three terms? Select all the expressions that apply.
irga5000 [103]

The answer is expressions D, E, and G.

In algebra, a ‘term’ usually means the different parts of an expression that are separated by + and - signs.

Options A and B only have 1 term, an x or y³, so these are incorrect.

Option C has 1 term as well, ‘xyz’, because they are all multiplied together which makes it one term.

D and E both have 3 terms each, but F has 4 unique terms so this is incorrect also.

G has 3 unique terms, x³, x^4, and 7x, so this is correct.

When H is expanded, you will end up with more than 3 unique terms, so this is incorrect.

I hope this helps!

6 0
2 years ago
Read 2 more answers
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