Question

4. Complete it.
(a) If in the A ABC, ZA = 60°and Z C = 30°then the triangle is​

Answer 1

Answer:

30-60-90 triangle

Step-by-step explanation:

let angle B be x

A + B +C=180°

60° + B + 30° =180°

B= 180-(60 + 30)

B = 180 - 90

B= 90°

therefore the triangle is a 30-60-90 triangle

Answer 2

Answer:

It is a right angled triangle.

Step-by-step explanation:

we know, the sum of all the angles of a triangle=180°

angle a+angle b+angle c= 180°(angle sum property)

60° + angle b+ 30°=180°

90°+angle b=180°

angle b= 180°-90°

therefore, angle b=90°.

since the triangle is right angled ar 90°, it is a right angle triangle.