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Given that x = 25 cm and y = 7 cm, work out ∠ BAC rounded to 3 SF.

Guest Mar 21, 2017
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I assume that y is one of the leg and x is the hypotenuse because that would look like a perfect Pythagorean triple.

And I assume that BAC is an angle and it is included in x and y.

And I assume that y is opposite to angle BAC

If I did not assume these I can't do anything with your question.

 

That way:

cos BAC = 7/25

BAC = 73.7 degrees,

 

Please try to give a more detailed question next time

MaxWong  Mar 22, 2017

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