The altitude of a right triangle is 7 cm
less than its base. If the hypotenuse is
13 cm. find the other two sides.please answer.
Answers
Answered by
1
Answer:
Let base be = x cm
Altitude = x - 7 cm
Hypotenuse = 13 cm
By the Pythagoras Theorem:
H^2 = P^2 + B^2
13^2 = x^2 + (x-7)^2
169 = x^2 + x^2 + 49 - 14x
169 = 2x^2 - 14x + 49
2x^2 - 14x - 120 = 0
x^2 - 7x - 60 = 0
x^2 - 12x + 5x - 60 = 0
x(x-12) + 5(x-12) = 0
(x+5)(x-12) = 0
x = 12, (-5)
Since, side can't be negative, x = 12 cm
Base = 12 cm
Altitude = 12 - 7 = 5 cm
__________________
Answered by
1
Answer:
hey mate here is our answer
Step-by-step explanation:
13^2= x-7)^2 +x^2
169=x^2 + 49 -14x + x^2
2x^ -14x = 120
factorise it and u will get base = 12 cm and altitude = 5 cm
plz mark as brainlist
Similar questions
Math,
5 months ago
Math,
5 months ago
Math,
11 months ago
Environmental Sciences,
11 months ago
English,
1 year ago