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blagie [28]
3 years ago
13

Sin ( 90 + theta ) = cos theta prove^

Mathematics
1 answer:
liberstina [14]3 years ago
5 0
We will use additional formula:
sin ( 90°+ theta ) = sin 90° * cos(theta) + cos 90° * sin(theta)=
= 1 * cos(theta) + 0 * sin(theta)= cos (theta)           It is proved.
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1. Write the following sentence as an equation: the product of w and 15 is 165.
Talja [164]
W+15=165
W=165/15
W=11
6 0
2 years ago
78 divided by 190 <br><br>steps
Goryan [66]
78 x 100 = 7800 

<span>How many times does 190 go into 780? </span>
<span>≈ 4....190 x 4 = 760 </span>

<span>780 - 760 = 20...bring down the extra 0 to make it 200. </span>

<span>How many times does 190 go into 200? </span>
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5 0
3 years ago
Find the area of the circle. Round your answer to two decimal places, if necessary.
Dmitry_Shevchenko [17]

Step-by-step explanation:

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5 0
2 years ago
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An investor invests $2,500 into a mutual fund and earns 5.75% on the principle for each of three years. How much interest has ac
HACTEHA [7]

Answer:

Interest in 3 years = $456.52

Step-by-step explanation:

As we know the the formula of compound interest

Total amount =  A(1+\frac{r}{n})^{nt}

Here n = number of times amount is compounded

r = rate of interest

t = period

Here A = $2500

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n = 1 (compounded annually)

t = 3 years

Therefore amount after 3 years

P=2500(1+\frac{.0575}{1})^{3}

P =2500(1.0575)³

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We have to calculate the interest then

Interest = $2956.52-$2500 = $456.52

So after 3 years interest gained = $456.52

8 0
2 years ago
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noname [10]

Answer:

Step-by-step explanation:

you want to divide 36 by 8 because you have 36 people and the recipie only makes it for 8.

You know that you will need to make the recipe 4.5 times.

So, multiply all the ingredient numbers by 4.5

2 x 4.5 = 9 quarts of water

3 x 4.5 = 13.5 sticks of cinnamon

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3 0
2 years ago
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