Question

A giant right triangular sculpture has two legs with lengths 20 meters and 40 meters. What is the measure of the smallest angle in this sculpture? Round your answer to the nearest degree.

15°
27°
30°
43°

Answer 1

we have the same question

Explanation:

please tell me what you got when you receive an answer

Answer 2

30 degrees

Explanation:

we need to compute angle A and angle B (see figure below)

hence,

`cosA=(20)/(40)\\ cosA=(1)/(2)`

this implies that A=60 degrees.

Since interior angles of a triangle add up 180 then,

A+B+90=180

60+B+90=180

B+150=180

B=180-150

B=30 degrees

which is the smallest angle