If c is the measure of the hypotenuse of a right triangle, how do you find each missing measure given a=x, b=x+41, c=85?

Question

1962 views around the world

You can reuse this answer
Creative Commons License

Answer 1 · 2017-03-07T16:17:52

36 & 77

We know, In a right triangle, #hypotenuse^2 = base^2+height^2#

Here, #c^2 = a^2 + b^2#

#rArr 85^2 = x^2 + (x+41)^2#

#rArr 7225 = x^2+x^2+82x+1681#

#rArr 2x^2+82x+1681-7225=0#

#rArr# 2x^2 + 82x - 5544=0#

#rArr 2(x^2+41x-2772)=0#

#rArr x^2+41x-2772 = 0#

#rArr x^2+77x-36x-2772 = 0#

#rArr x(x+77)-36(x+77)=0#

#rArr (x-36)(x+77)=0#

#rArr x = 36 & -77# #[x != -77]#

Hence a = 36 & b = 36+41 = 77