Find a. Round your answer to the nearest hundredth

a=9units

solution given:

c=40° exterior corresponding angle

In right angled triangle

<c°+B°+90°=180° [Sum of interior angle of a triangle is 180°

B°=180°-40°-90°=50°

Relationship between base and hypotenuse is given by cos angle

Cos c°=base/hypotenuse

Cos40°=a/12

a=Cos40°×12=9.19or 9 units

6/20

step-by-step explanation:

-22

times both sides by 2, times () by 8, add alile terms, move terms, add alike and caculate divide both sides by 3