Question

One angle of a right-angled triangle is 70°. Find the other acute angle.

Answer 1

A=70° (given)
B=90° ( because it is a right angled∆)
C=?

In ∆ABC,by angle sum property of a∆
A+B+C=180°
70°+90°+C=180°
160°+C=180°
C=180°-160°
C=20°

so, the other acute angle is 20°

hope this answer will help you.

Answer 2

The other acute angle is 20°

Step-by-step explanation:

We are given a right angled triangle

Right angle = 90°

One angle of right angled triangle = 70°

We are supposed to find the other acute angle.

Sum of all angles of triangle is 180°

So, 90°+70°+x=180°

160°+x=180°

x=180°-160°

x=20°

Hence the other acute angle is 20°

#Learn more:

In a right-angled triangle, one acute angle is twice of the other acute angle. Then find the angles

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