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Setler [38]
2 years ago
7

HELP PLEASE Need help on this problem

Mathematics
1 answer:
JulijaS [17]2 years ago
5 0

Answer:

Let's use the Pythagorean theorem!! I think there are two correct answers, right?

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I'm being timed pls help will pick brainliest
stiv31 [10]

Answer:

Cos 0° = 6.42 = V1

6th quadrant.

So, cos x = 0 implies x = (2n + 1)π/2 , where n takes the value of any integer. For a triangle, ABC having the sides a, b, and c opposite the angles A, B, and C, the cosine law is defined. In the same way, we can derive other values of cos degrees like 30°, 45°, 60°, 90°, 180°, 270°and 360

Step-by-step explanation:

if sin a= 3/4 then a = 50

if sin = 4/5 then a = 60

if sin = 2/3 then a = 40

But we can perfect this

if sin = 4/5 then a = 57   as 4/5 = 0.83

We want 0.8 = 4/5

if sin = 4/5 then a = 54 as 4/5 = 0.809

if sin = 4/5 then a = 53.5 as 4/5 = 0.80385

Now for cos

It is much easier than it initially appears. Remember the definition of SINE:

SINΘ = opp             In your case, that means the opposite is 4/5 = 0.80385 (yes, ignore the sign for now) and the hypotenuse is 11.48910018

           hyp             Please draw that triangle right now, because it will help you a lot at the end.

 53.50 degree           Remember to place the angle in the appropriate spot.

Now, use the Pythagorean Theorem to find the missing side (easy, right? It's 9.534) and place it in the adjacent position.

You can easily find all of the trig functions now!

Simply remember that:

COSΘ = Adj                                  with SEC the reciprocal of this one

            Hyp

TANΘ = Opp                                  COT the reciprocal of TAN and, if anyone asks, CSC coming from SIN.

            Adj

I told you to ignore the signs, but now we can't anymore. Remember the four quadrants and the memory trick:

A                        -- ALL are positive

Smart                 -- SIN and CSC are positive

Trig                    -- TAN & COT are positive

Class                  -- COS and SEC are positive.

Since your SIN was negative, it must be in III or 6, and COS is positive in I and 6 So we're in quadrant 6 then!

Only your COS and SEC will be positive, the rest negative

7 0
3 years ago
A spinner has 5 equal sections labeled 1 through 5. The bar graph shows the results of spinning the spinner 100 times. Which sta
lina2011 [118]

Answer:The experimental probability and theoretical probability are equal.

Step-by-step explanation:

They will still have the same outcomes if is an experimental or theoretical probability.

3 0
3 years ago
How do you write an equation for (-5,-1), (0,-1)
lesya692 [45]
Both the points have a coordinate where y is -1, so the equation is simply -1

y=-1

however if you wanted to really show the working out, it looks like this:

y=mx+c

m=change in y/change in x

m=(-1-1)/(-5+0)=0

subsitute one of the coordinates into y=mx+c

-1=0+c

c=-1

so then y=-1



4 0
3 years ago
40 POINTS Worth
Verizon [17]
Is this a right triangle or not?  If it's a right triangle, you could use the Pythagorean Theorem to find the length of the 3rd side, which would be the hypotenuse.  Thus, 14^2 + 4^2 = c^2, where c is the length of the hypot.

Then                        196 + 16 = 212, and this is c^2.  Then c, the length of the hypotenuse, is sqrt 212, or approx. 14.6 inches.

This does not agree with any of the four possible answers.  Thus, you must look at each of these possible answers and eliminate any that could not be correct.

for example:  if you take 10 inches and add 4 inches, you get 14 inches.  The result would not be a triangle, but rather a straight line.  

Check out the others similarly.
5 0
3 years ago
Read 2 more answers
kristen made half as many sundaes as Reese if they made thirty sundaes in all how many did Kristen make
PilotLPTM [1.2K]
Well, since half is when you divide something by 2, divide 30 by 2

Then, you get 15

So Kristen made 15 sundaes!

Hope this helped!
5 0
3 years ago
Read 2 more answers
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