The square root of 20? You'd use Pythagorean Theorem.
Check the picture below.
recall, the bearing is always starting from the North line clockwise.
Your answer would be option 2. Use the slope formula to see if any sides are perpendicular. This is because a right triangle must have 2 perpendicular sides that form a 90° angle for it to be a right triangle, so finding these would prove it.
I hope this helps!
<h2>ANSWER: θ = 35</h2>
<em><u>S</u><u>t</u><u>e</u><u>p</u><u> </u><u>b</u><u>y</u><u> </u><u>s</u><u>t</u><u>e</u><u>p</u><u> </u><u>e</u><u>x</u><u>p</u><u>l</u><u>a</u><u>n</u><u>a</u><u>t</u><u>i</u><u>o</u><u>n</u></em>
<u>Given : Sin55 = Cosθ</u>
<em>From trigonometric function we all know,</em>
<em> Sinθ = Cos(90-θ)</em>
<em>Sin55 = Cos(90-55)</em>
<em>Sin55 = Cos</em><em>3</em><em>5</em>
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