On a piece of paper, use a protractor and a ruler to construct △ABC with AB=6 cm , m∠A=80° , and m∠B=50° .
2 answers:
We know that the summation of angles of a triangle is 180<span>°. Then we find angle of C by, </span>m∠A + m∠B + m∠C=180° 80° + 50° + m∠C=180° m∠C=180°- 80°+ 50° m∠C=50° Since we now angle of C, we can use Sine Law in solving for AC sinC/AB=sinB/AC sin50°/6 =sin50°/AC AC=6cm Therefore, AC is equal to 6cm.
The correct answer for this question is this one:
On a piece of paper, use a protractor and a ruler to construct △ABC with AB=6 cm , m∠A=80° , and m∠B=50° .
What is AC ?
3 cm
6 cm
9 cm
12 cm
If you try to draw the triangle, it forms an isosceles triangle.
side AB has a length of 6cm. Side AB = Side AC. So the length of Side AC is also 6 cm.
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