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Answer:
konsa karna hai Q no. konsa hai
Answer:
1) Third side = 3 cm
2) AB = 13 cm
3) Angles are : 36° , 54° , 90°
Step-by-step explanation:
1) Since, the longest side of a right-angled triangle is known as hypotenuse.
Therefore, h=5 cm
let other side be = a = 4 cm
By Pythagoras theorem,
h²=a²+b²
5*5 = 4*4 + b*b
25 = 16+b*b
b*b = 9
b = 3 cm
2) AC=12 cm
BC = 4 cm
AB=?
Since, the triangle is right angled triangle at C
hence, AB will be triangle's hypotenus
By Pythagoras theorem,
AC² + BC²=AB²
AC*AC + BC*BC = AB*AB
12*12 + 5*5 = AB*AB
144 + 25 = AB*AB
AB*AB = 144 + 25
b*b = 169
b = 13 cm
3) let the ratio be x
since, total sum of angles in a triangle= 180°
therefore,
2x+3x+5x=180°
10 x= 180°
x= 180/10 = 18°
putting value of x in each angle
2x = 2 * 18° = 36°
3x = 3 * 18° = 54°
5x = 5 * 18° = 90°
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