Slide 1 : Trigonometry Trigonometry is a branch of mathematics that studies triangles, particularly right triangles. Trigonometry deals with relationships between the sides and the angles of triangles and with the trigonometric functions, which describe those relationships, as well as describing angles in general and the motion of waves such as sound and light waves. Hypotenuse Perpendicular Base
Slide 2 : a b c The sine (sin)function is defined as the the side opposite the angle to the hypotenuse.
Sin A= opposite = a
hypotenuse c The cosine function (cos) , defined as the ratio of the adjacent leg to the hypotenuse.
Cos A = adjacent = b
hypotenuse c The tangent function (tan), defined as the ratio of the opposite leg to the adjacent leg. tan A= adjacent = a
hypotenuse c
Slide 3 : Table of General values of T-Ratios
Slide 4 : Easiest Method
to
generate this
table
Slide 5 :
Slide 6 : Divide each value by 4
Slide 7 : Take Square root of each value
Slide 8 : Solving the values
Slide 9 :
Slide 10 : This is how we get the table for general values of T-Ratios. Kavita Saraf