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3 January, 22:03

The measure of angle A in angles ABC is 88 degrees. The measure of angle b is 60% of the measure of angle A. What is the measure of angle C?

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  1. 3 January, 22:08
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    First of all we need to find angle B which is 60% of 88.

    To find that we can just divide 88 by 100 and multiply it by 60 or divide by 10 and multiply by 6, or divide by 5 and multiply by 3, etc ...

    88 : 100 = 0.88

    0.88*60 = 52.8

    88 : 10 = 8.8

    8.8 * 6 = 52.8

    88 : 5 = 17.6

    17,6*3 = 52.8

    Ok, so angle a = 88, angle b is 52.8 and c is unknown.

    To find angle c we just need to subtract angle a + angle b from 180 because every triangle has a sum of the three angles of 180.

    180 = a + b + c

    a = 88 b=52.8 c=x (unknown)

    180 = 88 + 52.8 + x

    180 = 140.8 + x

    To shift 140.8 to the other side of the equation, we can just subtract 140.8 from both sides of the equation:

    180 - 140.8 = 140.8 - 140.8 + x

    39.2 = x

    x = 39.2

    c=x

    c = 39.2°

    Thats your awnser : angle c has an angle of 39.2 degrees!

    I hope you understood my brief explanation
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