Prove that:
(a)
(1 + tan A)2 + (1 – tan A)2
(1 + cot A)2 + (1 - cot A)2
=
tan? A

10 points? me . its important ‼️‼️

The areas of two similar triangles are 72dm2 and 50dm2. the sum of their perimeters is 226dm. what is the perimeter of each of these triangles?

Afarmer has a large field that is x feet in length. he wants to fence in a rectangular section in the middle of the field , leaving a length of 100 feet of open field behind each end of the fenced rectangle. he also wants the width of the fenced-in space to be 100 feet less than its length. find the expressions to represent the length and width of the fenced section of the field