Question

if a=50° and b=40° then find angle acd​

Answer 1

Answer:

next time ,mention that it is a ∆ in question

Answer 2

Answer:

angle acd = 90°

In a triangle there are three sides and angles.

a= 50° , b=40° then let c =x

we know that the sum of all the angles of a triangle is 180°

50°+40°+x= 180°

90°+x=180°

x=180°-90°

x= 90°

so angles c is 90°

hence, it is right angle triangle.