in a right angled triangle one of the acute angles exceeds the other by 20 degree find the measure of the acute angles
Answers
Answer:
35
Step-by-step explanation:
Let of acute angle be = x.
let other acute angle be = x - 20
we know that ,
the sum of the angles in a triangle =180
90 + x + ( x - 20 ) =180
90 + 2x -20 = 180
70 + 2x = 180
2x = 180 - 70
2x = 110
x = 110 /2
x = 55.
∴ The one of acute angle = x
= 55.
∴ the other acute angle = x - 20
= 55 - 20
= 35.
I hope this helps
Given:
✰ In a right angled triangle, one of the acute angles exceeds the other by 20 degree.
To find:
✠ The measure of both the acute angles.
Solution:
Let's understand the concept first! First we will assume that one acute angle of right angled triangle be x and then the other angel exceeds by 20 degree which means we will add 20° to x and we know there is always one angle in right angled triangle which is 90°. After that we will all the third angles of right angled triangle and we know sum of interior angles of right angled triangle is 180°. Thus, forming equation and doing required calculations, we can find both the acute angles of right angled triangle.
Let's find out...
Let one acute angle of right angled triangle be x°
then the other acute angle = (x + 20)°
Third angle = 90° [ ∵ One angle in right angled triangle
✭ Sum of angles of triangle = 180° ✭
➤ x + x + 20° + 90° = 180°
➤ 2x + 110° = 180°
➤ 2x = 180° - 110°
➤ 2x = 70
➤ x = 70/2
➤ x = 35
∴ One acute angle of right angled triangle = 35°
➤ Other angle = x + 20°
➤ Other angle = 35° + 20°
➤ Other angle = 55°
∴ Other acute angle of right angled triangle = 55°