Because of its special reflective properties, a
parabola is an ideal shape for collecting
weak radio signals. The European Space
Agency has asked you to write an equation
for the parabolic dish of their new radio
telescope. It is parallel to the ground and
should have the following dimensions:
Width of dish: 60 m
Depth of dish: 10 m
Height above ground level (measured from
the bottom of the dish): 50 m
Horizontal distance from the bottom of the
dish to the control room (the origin): 100 m

c. 27 units.

step-by-step explanation:

we are told that in circle a, ∠bae ≅ ∠dae.

we can see from our given diagram that in and ;

, as these are radii of our given circle.

therefore, by sas congruence postulate.

hence, side be will be equal to side de as corresponding parts of congruent triangles are congruent. so we can set an equation to find the value of x as:

now let us substitute x=17 in the expression for the length of be.

therefore, length of be will be 27 units and option c is the correct choice.

sas (side angle side)

aa (angle angle)

sss(side side side)

sas find two sides with an angle in between

aa is finding two angles and the third will add up to 180

sss find all sides

step-by-step explanation:

3

step-by-step explanation: