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earnstyle [38]
3 years ago
15

In right triangle ABC, ∠A and ∠B are complementary angles and sin A = . What is cos B?

Mathematics
2 answers:
Musya8 [376]3 years ago
4 0

Answer:

PLATO!!!!!

The correct answer is B. 8/9.

hodyreva [135]3 years ago
3 0

Answer:

c

Step-by-step explanation:

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Darius is a graphic designer he makes a sign for a company that has a width of 2 feet and a length of 2 feet 6 inches the compan
Sav [38]

Answer:

\frac{1}{3}

Step-by-step explanation:

Width of the sign made by Darius initially = 2 feet

Length of the sign = 2 feet 6 inches

Dimension of the flyer are 10 inches by 8 inches. Since, in original sign the measure of length is greater, therefore, the length of flyer is 10 inches and its width is 8 inches.

In order to find the scale factor we must convert the lengths and widths to same units. Lets convert the length and width of sign into inches.

Since, 1 feet = 12 inches

Length of the sign = 2 feet 6 inches = 2(12) + 6 inches = 30 inches

Width of the sign = 2 feet = 2(12) inches = 24 inches

Now we can find the scale factor by either comparing the lengths or widths of both the designs. Scale factor will be equal to the ratio of corresponding lengths/widths.

So, the scale factor would be:

Length of Flyer : Length of Sign

= 10 inches : 30 inches

= 1 : 3

= \frac{1}{3}

This shows, the length of flyer is \frac{1}{3} times as that of the sign. So, the scale factor that Darius must use is \frac{1}{3}. The length and width of the flyer are \frac{1}{3} as that of the sign.

The same scale factor would result if we would have used the ratio of widths instead of the lengths.

Scale Factor = Width of Flyer : Width of sign

= 8 : 24

= 1 : 3

Therefore, Darius must type the scale factor of \frac{1}{3} in his computer to get the size of the flyer.

7 0
3 years ago
PLEASE HELP ME ASAP I REALLY NEED HELP!, THANK YOU
Lesechka [4]

Answer:

3141.59 cm cubed

Step-by-step explanation:

The formula for volume of a cone is:

V=πr²h /3

When you plug in your numbers, you'll get your answer!

--------------------------------------------------------------------------------------------------------

Have a good day :)

4 0
3 years ago
Read 2 more answers
Find: ∠a ∠b ∠c Plaese help
Amiraneli [1.4K]

Answer:

i believe a=105, b=29, and c=45

4 0
4 years ago
Regina has a bag of marbles that contains 3 blue marbles, 4 red marbles, and 5 yellow marbles. She draws one marble, then replac
iVinArrow [24]

Answer:  

Possible outcomes=12

P(\text{Blue marble first})=\frac{1}{4}

P(\text{Yellow marble})=\frac{5}{12}

P(\text{ Blue then yellow})=\frac{5}{48}

Step-by-step explanation:

We can see these two events are independent as Regina replaced marble after drawing one marble.

We can find possible outcomes by adding number of blue, red and yellow marbles.

\text{Possible outcomes}=3+4+5=12

Let us find probability of getting a blue marble on first draw.

P(\text{Blue marble})=\frac{3}{(3+4+5)} =\frac{3}{12} =\frac{1}{4}

Now we will find probability of getting yellow marble.

P(\text{Yellow marble})=\frac{5}{(3+4+5)} =\frac{5}{12}

We can find probability of getting a blue marble and then yellow marble by multiplying both probabilities.

P(\text{ Blue then yellow})=\frac{1}{4}* \frac{5}{12} =\frac{5}{48}

Therefore, probability of getting a blue marble and then yellow marble is \frac{5}{48}.

6 0
4 years ago
Read 2 more answers
You want to take a trip to Brazil.
GuDViN [60]

Answer:

A

Step-by-step explanation:

7 0
3 years ago
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