Monday 16 January 2017

COORDINATE GEOMETRY 1A


If x-150 and 4x + 350 are complementary angles, find the value of x.

solution

Complementary angles add up to 900.

so,  x-150 + 4x + 350 = 900.

 x + 4x + 350 - 150 = 900.

 5x + 200 = 900.

  5x = 900 -  200

  5x = 700

  5x = 7014
  5       5

Hence x = 14

TRY THIS...............

 If 3x - 220 and 2x + 870 are complementary angles, find the value of x.

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