Question

Two angles are complementary. two times the measure of one is equal to 40% of the measure of the other. find the measure of both angles.

Answers

  1. The measure of both angles are 112.5 and 68.5 degrees

    Complementary angles

    The sum of two complementary angles is 90 degrees.
    If two angles are complementary, then;
    x + y = 90
    x = 90 – y……….1
    where x and y are the angles
    If  two times the measure of one is equal to 40% of the measure of the other then;
    2x = 0.4y …………2
    Substitute equation 1 into 2
    2(90-y) = 0.4y
    180 – 2y = 0.4y
    180 = -0.4y + 2y
    1.6y = 180
    Divide both sides by 1.6
    1.6y/1.6 = 180/1.6
    y = 112.5 degrees
    For the other angle
    x= 180 – y
    x = 180 -112.5
    x = 68.5 degrees
    Hence the measure of both angles are 112.5 and 68.5 degrees
    Learn more on complementary angles here: https://brainly.com/question/16281260
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