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hram777 [196]
3 years ago
7

In ΔABC, where ∠C is a right angle, cos A=√21/5. What is sin B?

Mathematics
1 answer:
Stolb23 [73]3 years ago
7 0

Answer:

A

Step-by-step explanation:

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3.6399; thousandths round it ​
shepuryov [24]

Answer:

3.6399 = 3.640

Step-by-step explanation:

3.6399\\1\:2\:3

Rounding to nearest thousandth means rounding to 3 decimal place

(0 to 4) =round down

(5 to 9)= round up

3 0
3 years ago
Convert degree into Radian that is 18 degree 12'​
kiruha [24]

Answer:

\frac{\pi }{10} radians

Step-by-step explanation:

To convert degrees into radians, multiply the degrees with \frac{\pi}{180}.

If you have 18 degrees:

18*\frac{\pi}{180} = \frac{\pi }{10}

4 0
3 years ago
Find the first five terms that correspond with the following expression.<br><br> 4n + 2
Lorico [155]

Answer:

6,10,14,18,22

Step-by-step explanation:

4n+2

Let n=1  4(1)+2 = 4+2 = 6

Let n=2  4(2)+2 = 8+2 = 10

Let n=3  4(3)+2 = 12+2 = 14

Let n=4  4(4)+2 = 16+2 = 18

Let n=5  4(5)+2 = 20+2 = 22

7 0
2 years ago
Period of y=2tan (2x+90) -1
krek1111 [17]
20 is the answer
I hope this help
4 0
3 years ago
Find the distance between each pair of points <br>L(-7,0) ,Y(5,9)​
Sedbober [7]

Answer:  The distance is 15

Step-by-step explanation:

To find the distance between L and Y find the difference in the x and y coordinates then square them and add them to find their square root.

-7-5= -12

0-9 = -9

12^2 + 9^2 = d^2   where d is the distance

144 + 81 = d^2

225 = d^2

d= \sqrt{225}  

d= 15

3 0
3 years ago
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