Sine: The opposite side of angle α is higher than the hypotenuse.

Cosine (cos): The adjacent side of angle α is the upper hypotenuse.

Tangent (tan): The opposite side of angle α is greater than the adjacent side.

Cotangent: The adjacent side of angle α is higher than the opposite side.

Secant: the hypotenuse of angle α is larger than the adjacent side.

Cotangent: The hypotenuse of angle α is higher than the edge.

sin30 = 1/2

Sin45 = root number 2/2

Sin60 = root number 3/2

Cos30 = root number 3/2

Cos45 = root number 2/2

cos60 = 1/2

Tan30 = root number 3/3

tan45 = 1

Tan60 = root number 3