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nasty-shy [4]
2 years ago
10

What are the ratios for sin A and cos A? The diagram is not drawn to scale.

Mathematics
1 answer:
trapecia [35]2 years ago
6 0

Answer:

C

Step-by-step explanation:

Sin represents opposite/hypotenuse. Thus, when A is the reference angle, 21 is the measure of the opposite side (CB) and 29 is the measure of the hypotenuse (AB).

Cos represents adjacent/hypotenuse. Therefore, when A is the reference angle, 20 is the measure of the adjacent side (AC) and 29 is the measure of the hypotenuse (AB).

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Is the distance from 4.75 to 0 is the same as the distance from -4.75 from 0 on the number line​
patriot [66]

Answer:

Yes

Step-by-step explanation:

The "Absolute value" of both is 4.75

6 0
3 years ago
Read 2 more answers
An air traffic controller spots two airplanes at the same altitude converging to a point as they fly at right angles to each oth
sattari [20]
They are traveling at right angles to each other so we can say one is traveling north to south and the other west to east.  Then we can say that there positions, y and x are:

y=150-600t  x=200-800t

By using the Pythagorean Theorem we can find the distance between these two planes as a function of time:

d^2=y^2+x^2, using y and x from above

d^2=(150-600t)^2+(200-800t)^2

d^2=22500-180000t+360000t^2+40000-320000t+640000t^2

d^2=1000000t^2-500000t+62500

d=√(1000000t^2-500000t+6250)

So the rate of change is the derivative of d

dd/dt=(1/2)(2000000t-500000)/√(1000000t^2-500000t+6250)

dd/dt=(1000000t-250000)/√(1000000t^2-500000t+6250)

So the rate depends upon t and is not a constant, so for the instantaneous rate you would plug in a specific value of t...

...

To find how much time the controller has to change the airplanes flight path, we only need to solve for when d=0, or even d^2=0...

1000000t^2-500000t+62500=0

6250(16t^2-8t+1)=0

6250(16^2-4t-4t+1)=0

6250(4t(4t-1)-1(4t-1))=0

6250(4t-1)(4t-1)=0

6250(4t-1)^2=0

4t-1=0

4t=1

t=1/4 hr

Well technically, the controller has t<1/4 because at t=1/4 impact will occur :)


7 0
3 years ago
A taxi charges $1.75 plus a free of $0.75 for each mile traveled the total cost of a ride without a tip is, $4.75. How many mile
LiRa [457]

Answer:

<u>4 miles traveled</u>

Step-by-step explanation:

1.75 + 0.75m = 4.75.

4.75 - 1.75 = 3

3 ÷ 0.75 = 4

5 0
3 years ago
Read 2 more answers
Find the missing measures for the rectangle
Vadim26 [7]
Do you have a picture or something to accompany the question? 
5 0
3 years ago
Does anyone know matrices?
Sunny_sXe [5.5K]

Answer:

this is Geometry right?

Step-by-step explanation:

3 0
3 years ago
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