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Nataly [62]
2 years ago
9

If three of the exterior angles of an equiangular polygon is total 90 degrees how many sides does the polygon have

Mathematics
1 answer:
kicyunya [14]2 years ago
7 0

Answer:

12 sides

Step-by-step explanation:

If the three equal angles add to 90, this means each of those angles must by 30 degrees.

Next, we can use the theorem that the sum of the exterior angles adds to 360 (this is true for any polygon). So, as the exterior angles are all equal to 30, we just work out 360 ÷ 30 = 12.

So the polygon has 12 angles, and therefore 12 sides also.

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What does the median represent in a set of numbers?
Alja [10]

Answer:

The median is the middle number in a sorted, ascending or descending, list of numbers and can be more descriptive of that data set than the average. The median is sometimes used as opposed to the mean when there are outliers in the sequence that might skew the average of the values.

Step-by-step explanation:

Hope this helps :)

5 0
3 years ago
Cos (pi/2 -x) = sin x is this true or false?
Ksenya-84 [330]

The above statement is true meaning cos(π/₂-x)=sin(x)

Step-by-step explanation:

We know that sine and cosine function are mutual cofunctions.

Hence this would mean that these two functions are complimentary of each other meaning cos(π/₂-x) = sin(x)

This can be verified mathematically by assuming “x” as 30°

Hence Cos (π/₂-30°) = cos 60°= 0.5 (from trigonometric table values)

Similarly Sin 30°= 0.5 (from trigonometric table values)

This can be proved through using the formula

Cos(A-B)= Cos A.Cos B + Sin A.Sin B

Here A=90° and b=x°

Putting the values we get (it is to be remembered that cos 90°=0 and sin 90°=1)

Cos 90°.cos x+ sin 90.sin x

0+sinx= sinx

Hence it is proved that cos(π/₂-x)=sin(x)

 

7 0
3 years ago
Sela's piano lesson starts at 4:45 pm the lesson is 30 mins long . When does her lesson end ?
MArishka [77]

Answer:

5:05

Step-by-step explanation:

6 0
2 years ago
Please help <br>Im on number 42 and have to verify the identity. ​
Bond [772]

Answer:

cool

Step-by-step explanation:

4 0
3 years ago
Fraction 4 over 5n = Fraction 2 over 3. n = ___? Fraction 2 over 15 Fraction 5 over 6 1Fraction 1 over 5 1Fraction 7 over 15
erastova [34]
So, we know that

4/5n = 2/3

n = 2/3 x 5/4    . . . . .. if fraction is moved to other side of the equation the numerator and denominator will be swithced

n = 10/12     ......................... divide numerator and denominator by 2

n = 5/6

The answer is Fraction 5 over 6

8 0
3 years ago
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