Question

the size of a computer monitor is usually measured along the diagonal and 18 inch rectangular monitor has a height of 9 in what is the length of the base of the monitor to the nearest tenth of an inch

Answer 1

Following the Pythagorean theorem, c=sqrt(a^2=b^2)

where, c=hypotenuse   a= one side of the triangle   b=another side of the triangle

thus, b= sqrt(c^2-a^2)
         b= sqrt(18^2-9^2)
         b= 15.6 in