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lesantik [10]
3 years ago
10

Is there any tricks to memorize the special right triangle's sides?

Mathematics
2 answers:
noname [10]3 years ago
8 0
Sohcahtoa
My algebra teacher got us all to remember that word because...
Soh - Sin = Opposite / Hypotenus
Cah - Cos = Adjacent / Hypotenus
Toa - Tan = Opposite / Adjacent
Sin, Cos, and Tan are what you can use to find missing triangle sides if you know at least one other angle besides the 90 degree angle.

Zolol [24]3 years ago
5 0
No, but there is a way of creating them. If you let 
a = 2xy
b = x^2 - y^2 where x > y
c = x^2 + y^2 

And a^2 + b^2 = c^2 You can create these sides to your needs. For example

x = 5
y = 2

2xy = 2*5*2 = 20
x^2 - y^2 = 25 - 4 = 21
x^2 + y^2 = 25 + 4 = 29  which is not well known but it is a right angle.

29^2 = 20^2 + 21^2

841 = 400 + 441
841 = 841

Just one further comment. It is easy to check to see if the triangle you are talking about is a right triangle. Just use a^2 + b^2 = c^2. 

Generally it is unnecessary to either create your own or memorize ones you have come across. 

I think any math teacher would say "why bother?"
If you are not satisfied, put a reason for doing this in the comments. 
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Please help!
victus00 [196]

Answer:

70° is the answer hope it helps

30°+90°+ 3y= 180°

120°+3y= 180°

3y= 180°-120°

y= 60°/3

y= 20°

Now

y°+90°+x°= 180°

20°+90°+x= 180°

x= 180°-110°

x= 70°

7 0
2 years ago
Read 2 more answers
e 400 trials in which the assistant maintained a neutral expression, the driver stopped in 229 out of the 400 trials. Find a 95%
Fittoniya [83]

Answer:

Step-by-step explanation:

n = 400

Proportion p = 229/400= 0.5725

For 95% confidence interval we use Z value as 1.96

Std error = 0.025

margin of error = 1.96*0.025

Confidence interval 95% = 0.5725±Margin of error

= (0.524, 0.621)

b) When smiled x becomes 277

p = 0.6925

Std error = 0.023

Margin of error= 1.96*0.023

Confidence interval = (0.647, 0.738)

Smiling increases the chances of stopping since mean and conidence interval bounds are showing increasing trend.

6 0
3 years ago
A slide has a diagonal of 10 feet and covers a distance of 8 feet across the ground. How many feet high is the slide at its high
Tasya [4]

So, this creates a triangle once again. If we imagine a slide, the slide itself would be the hypotenuse of the triangle, then if there's a ladder leading up to the slide, that would be the vertical length we're looking for. The feet across the ground would be the distance from the bottom of the slide to the bottom of the ladder.

We can use the Pythagorean theorem to find the missing side length, as this would create a right triangle. | 8^2 + b^2 = 10^2 | 64 + b^2 = 100 | b^2 = 36 | b = 6 feet | The slide is 6 feet high at its highest point.

4 0
3 years ago
What is the slope of the line represented by the following equation?
mart [117]

Answer:

The slope of the line represented by the following equation is -4

y-intercept: −1

6 0
3 years ago
A new pair of skates cost $75. They are on sale for 10% off. Sales tax is 8%. If you purchased the skates, how much would you pa
Aleonysh [2.5K]

Answer:

72.9

Step-by-step explanation:

10% off 75 gets you to 67.5

8% more than 67.5 is 72.9

5 0
3 years ago
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