Sine θ Cos θ Tan θ

Sine (sin): The sine of an angle is the ratio of the opposite side to the hypotenuse of a right-angled triangle. Mathematically, sin(x) = opposite / hypotenuse. Cosine (cos): The cosine of an angle is the ratio of the adjacent side to the hypotenuse of a right-angled triangle. Mathematically, cos(x) = adjacent / hypotenuse. Tangent (tan): The tangent of an angle is the ratio of the opposite side to the adjacent side of a right-angled triangle. Mathematically, tan(x) = opposite / adjacent. Sine (sin): The sine of an angle is the ratio of the opposite side to the hypotenuse of a right-angled triangle. Mathematically, sin(x) = opposite / hypotenuse. Cosine (cos): The cosine of an angle is the ratio of the adjacent side to the hypotenuse of a right-angled triangle. Mathematically, cos(x) = adjacent / hypotenuse. Tangent (tan): The tangent of an angle is the ratio of the opposite side to the adjacent side of a right-angled triangle. Mathematically, tan(x) = opposite / adjacent. [outro] The cosecant of an angle is the reciprocal of sin. Mathematically, cosecant is the hypotenuse divided by the opposite side or just 1/sin. The secant (sec) of an angle is the reciprocal of cos. Mathematically, sec is hypotenuse/adjacent or just 1/cos. The cotangent (cot) is the reciprocal of tangent. Mathematically, the cotangent is adjacent/opposite or 1/tan.