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Please help me and I will give you a brain list for the correct answer.

Please help me and I will give you a brain list for the correct answer.-example-1
User Sam Murphy
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1 Answer

5 votes

Explanation:

FIRST find the hypotenuse CB

sin B = .5 = opposite leg/ hypotenuse

.5 = 3x/CB

CB = 3x/.5 = 6x

Now you can use the Pythagorean theorem

(6x)^2 = (3x)^2 + AB ^2

AB ^2 = 36x^2 - 9x^2

AB ^ 2 = 27 x^2

AB = x sqrt 27

AB = 3x sqrt 3

OR

If sin = 1/2 cos = sqrt(3) /2 Using CB = 6x as before

AB = sqrt (3)/2 * 6x = 3x sqrt 3

User CLearner
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