Question

what is complementary angle of (10x-88)?

Answer 1

Let the complementary angle of (10x - 88 ) = y 

90 - 10x - 88 = y 

2 - 10x         = y 

Answer 2

let the compliment angle= y
(10x-88)+y=90°
10x-88+y=90°
10x+y=90°+88°
10x+y=178°
y=178°-10x