Given a right triangle, what is the measure of 2B if ZA = 35º and b = 7?(Round your answer to the nearest degree.)
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Let us make a drawing of the triangle:
Let's remember that the three angles of a triangle add up to 180 degrees. Then,
[tex]\measuredangle A+\measuredangle B+\measuredangle C=180\degree[/tex]Since our triangle is right, we have
[tex]\measuredangle C=90\degree[/tex]Thus
[tex]35\degree+\measuredangle B+90\degree=180\degree[/tex][tex]\measuredangle B=180\degree-90\degree-35\degree=55\degree[/tex]This means that the answer is 55°.