What are the angle measures of an isosceles triangle whose base is half as long as its congruent legs? round intermediate results to 3 decimal places and final answers to 1 decimal place.

the measure of angle y is:
the measure of the third angle is:

Step-by-step explanation:

Look at the picture.

Use the trigonometric function

We have:

Substitute:

We know: The angles in a triangle add up to 180°. Therefore:

      subtract 151.044° from both sides

it’s the first one your welcome

arc length = 6.63311 ft.

step-by-step explanation:

the formula the arc measure is:

arc length s=2πr(c)/360

where:

c   is the central angle of the arc in degrees

r   is the radius of the arc

π   is pi, approximately 3.142

using the above formula we get

s =

thus we find that arc length of an arc for a circle of radius 20 feet and central angle 19 degrees is

6.63311 feet