Kate needs to swim 40 laps to come complete 66 laps
The equation is y=mx+c where m is the gradient and c is the y-intercept
Do the Pythagorean theory to find the unknown side by doing:
c^2 = a^2 - b^2
Then you’ll have two sides and two angles.
Do sine law.
Sin(angle) / side (opposite to it) = Sin(angle) / side (opposite to it)
Slope is rise over run, so the slope here is m=2/3.
Answer:
Roja: calcetín azul calcetín: amarillo