Answer:
ø is a greek letter that just means an unknown variable in triangles or math.
Sineø means to find the opposite side from the angleø and divide it by the hypotenuse of the triangle(which never changes, its always the longest side).
COSINEø means to find the adjacent side to the angleø(side touching the angle next to it) and divide it by the hypotenuse.
TANGENTø means to find the opposite side from angleø and divide it by the adjacent side.
And easy way to remember these are SOH,CAH,TOA.
S for sine, O for opposite and H for hypotenuse.
C for cosine, A for adjacent, and H for hypotenuse.
T for tangent, O for opposite, and A for adjacent.
