Answer:
2530
Step-by-step explanation:
First Round each number to the nearest 10s
503 into 500
472 into 470
499 into 500
539 into 540
522 into 520
then add the numbers we made
500+470+500+540+520=2530
the real answer is 2535 so its close
Answer:
see explanation
Step-by-step explanation:
(1)
the sine of an angle = 
(a)
here the opposite is 12 and the hypotenuse is 13
12 is the side opposite ∠DEF ← required angle
(b)
the tangent of an angle = 
here the opposite is 5 and the adjacent is 12
∠DFE ← required angle
(2)
to calculate AB use Pythagoras' identity in the right triangle
AB² = 2² + 3² = 4 + 9 = 13, hence
AB = 
≈ 3.6 ( to nearest tenth )
tanB = 
⇒ B = 33.7°
tanA = 
⇒ A = 56.3°
Answer:
b= -1.6
When you do inverse operations, (-1)-0.6= -1.6
Answer:
all sides have different lengths
and the third angle measures 90⁰
The sides of a regular polygon with a known interior angles can be found as follows:
Interior Angle = (n−2) × 180° / n
<h3 /><h3 /><h3>Regular polygon</h3>
A regular polygon is a polygon that have equal sides and equal angles.
A regular polygon has the following angles:
- interior angles
- exterior angles
According to the question, the interior angles are given. To know the number of sides of polygon can be calculated as follows:
Note the interior and the exterior angles add up to 180 degrees.
Therefore,
Interior Angle = 180° − Exterior Angle
Exterior angle = 360°/n
Interior Angle = 180° − 360°/n
n = number of sides
Finally,
- Interior angle = (n−2) × 180° / n
learn more on polygon here:brainly.com/question/7153502?referrer=searchResults
