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Likurg_2 [28]
3 years ago
14

What is the exact value of cos(-60°)?​

Mathematics
2 answers:
vladimir1956 [14]3 years ago
8 0
Cos (-60) = 1/2

If you look at the cosine graph below you can see the black line pointing at 60 degrees is at 0.5, which is 1/2

Afina-wow [57]3 years ago
4 0

Answer: 1/2

Step-by-step explanation:

cosine=adjacent/hypotenuse

Cos (-60)=1/2

This is a special triangle

see below as the ratio of each side

Hope this helps!! :)

Please let me know if you have any question

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URGENT HELPP
gladu [14]

Answer:sadddddddddddddddddddddddddddddddddddddddddddddddddddd

Step-by-step explanation:

ddddddddddddddddddddddddddddddddddddddddddddddddddddddddd

3 0
3 years ago
The exponential function y= a(b)^x passes through the points (3,25) and (8,10). Which of the following is closest to the value o
Yuki888 [10]

If the exponential function y=ab^x passes through the points (3,25) and (8,10), the value of b is 0.833

The given exponential equation is:

y=ab^x

The function passes through the points (3, 25) and (8, 10)

Substitute x = 3 and y = 25 into the function y=ab^x

25=ab^3............................(1)

Substitute x = 8 and y = 10 into the function y=ab^x

10=ab^8.............................(2)

Divide equation (2) by equation (1)

\frac{10}{25}=\frac{ab^8}{ab^3}  \\\\0.4=b^5\\\\b=0.4^\frac{1}{5} \\\\b=0.4^{0.2}\\\\b=0.833

Therefore, if the exponential function y=ab^x passes through the points (3,25) and (8,10), the value of b is 0.833

Learn more on exponential functions here: brainly.com/question/12940982

6 0
3 years ago
A mixture requires 4 cups of water for every 7 cups of flour used. How many cups of water should be used with 28 cups of flour
MAVERICK [17]

Answer:

16 cups of water

5 0
3 years ago
Find the geometric mean between 9 and 11
klio [65]

Step-by-step explanation:

Geometric mean is the square root of the product.

√(9 × 11) = √99 ≈ 9.950

3 0
3 years ago
Find m<14 if m<13=115º.
salantis [7]

Answer:

115

Step-by-step explanation:

Since line v and line u are parallel:

m<14 and m<13 must be alternate exterior angles and alternate exterior angles has equal measure so the answer is:

m<13 = m<14 = 115.

8 0
3 years ago
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