Question

find the Complementary angles and the x-y=12 find the xy
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Answer 1

we have

x-y = 12 & xy = 25/4

x+y = ?

(x+y)^2 = (x-y)^2 = 4xy

here..

(x+y)^2 = 12^2 + 4 x 25/4

= 144 + 25 = 169

= x+y = √169 = 13