This week at school we learned how to find the trigonometric ratios of a right-angle triangle which can be found by first determining where the angle is which is the acute angle given this is the variable θ then we find out what type of side they are from this. The longest side in the triangle is the hypotenuse the side next to the angle is the adjacent side and the opposite side is opposite to the angle. we use those sides in the formulas  sin(θ) = Opposite / Hypotenuse, cos(θ) = Adjacent / Hypotenuse and  tan(θ) = Opposite / Adjacent. An example of this is if a right triangle has a hypotenuse side of 6 in length and an opposite side of 3 based on the given angle the sine ratio is 3/6= 2. Another example is if a triangle’s adjacent side length to the given acute angle is 4 and the longest length side of the hypotenuse is 5 then the cosine ratio of this right triangle is 4/5. to find the ratio angle we use the second function of a scientific calculator and press the ratio we have these functions are cos-1, sin-1, and tan-1.