Question:
If the angles (2x − 10)° and (x − 5)° are complementary, find x?
Solution:
Given that (2x − 10)° and (x − 5)° are complementary
Since angles are complementary, their sum will be 90
(2x - 10) + (x - 5) = 90
3x -15 = 90
3x = 90 + 15
3x = 105
x = 105/3
x = 35
Hence, the value of x = (35)°