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NeX [460]
3 years ago
14

Write the expression as either the sine, cosine, or tangent of a single angle.

Mathematics
2 answers:
dlinn [17]3 years ago
7 0
The answer is cos(2pi/35)
lana66690 [7]3 years ago
4 0
The expression is:
cos (π / 5) cos (π/7) + sin (π/5) sin(π/7)

This expression can be reduced into a trigonometric function with one angle if we make use of the trigonometric identities. The appropriate identity is:
cos (A - B) = cos A cos B + sin A sin B

If we let
A = π / 5
B = π / 7

Therefore,
cos (π / 5) cos (π/7) + sin (π/5) sin(π/7) = cos (π/5 - π/7) = cos (2π/35)

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Suppose a normal distribution has a mean of 266 and a standard deviation of
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Answer:

I think the answer is P(x>178)

Step-by-step explanation:

5 0
3 years ago
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So I need to put them in the order can you please help me
Alex787 [66]

Answer:

2.112

Step-by-step explanation:

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3 years ago
Find the length of the missing side in the figure below. a = _______ cm.
WITCHER [35]

Answer:

\frac{2 \sqrt{177} }{5}

or

5.32cm correct to 2 decimal places

Step-by-step explanation:

This is a right angled triangle from what I know so we have to apply pythagoras theorem.

{7.1}^{2}  =  {a}^{2}  +  {4.7}^{2}

we need to rearrange this to find a²

{a}^{2}  =  {7.1}^{2}  -  {4.7}^{2}

a =  \sqrt{ \frac{708}{25} }

This can either be written as a fraction or decimal.

a =  \frac{2 \sqrt{177} }{5}

OR

a = 5.32

correct to 2 decimal places

5 0
1 year ago
Olympia ate lunch at a restaurant the amount of her check was $6.89 she left eight dollars on the table which included the amoun
maxonik [38]

The equation will be like this,

6.89 + t = 8.00

t = 8 - 6.89

t = 1.11

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6.89 + t = 8.00

To sum up the total amount of cash and coins you have, first, sort each invoice and coin by denomination. Create a separate stack for each denomination and count how many denominations or coins you have.

For each denomination of banknotes and coins, multiply the number you have by the denomination. For example, if you have 4 out of $ 10, multiply by 4x10 to get $ 40. If you have three $ 5 bills, multiply by 3x5 to get $ 15.

Sum the totals to calculate the total amount.

Learn more about Ammount Calculation  here: brainly.com/question/2005046

#SPJ4

3 0
2 years ago
It rained 10% of the 30 days last month.on how many days did it not rain?
drek231 [11]
10% of 30 is 3, which means it rained 3 days. 

30-3 = 27 days NO rain

7 0
3 years ago
Read 2 more answers
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