What equation would Krista write?
With the given angle of
, is the adjacent side and is the hypotenuse.
Which trigonometry ratio should you use?
Krista does not have a calculator, but she remembered something funny her friend Juanisha told her. Juanisha’s favorite sine ratio is sin
because 5/22 is Juanisha’s birthday! Without a calculator, use Juanisha’s favorite ratio to solve your equation from part (a).
Remember the sine of one acute angle in a right triangle equals the cosine of the other acute angle.
Find the measure of the missing angle in the triangle, then use sine ratio.