Sec Function Math

In fact most calculators have no button for them and software function libraries do not include them.

Sec function math. As with the other trigonometric functions in modern use the secant function was certainly known to arab scholars and tables of secant values are known to have been in existence by the tenth century ce. Secant cosecant and cotangent almost always written as sec cosec and cot are trigonometric functions like sin cos and tan. Show this behavior by finding the secant of x degrees and 2 radians. Tan x sin x.

Secant sec trigonometry function see also secant of a circle. Remember you cannot divide by zero and so these definitions are only valid when the denominators are not zero. In a formula it is abbreviated to just sec. In a right angled triangle the secant of an angle is.

In a right triangle the secant of an angle is the length of the hypotenuse divided by the length of the adjacent side. Secf sec f secf 1 cos pi x 180 1 cos 2 you can calculate secf by substituting for x using subs and then using double or vpa. Syms x f x u degree 2 u radian. The abbreviation is sec sec θ hypotenuse adjacent.

Sec x 1. Cosec x 1. For example the triangle contains an angle a and the ratio of the side opposite to a and the side opposite to the right angle. Of the six possible trigonometric functions secant cotangent and cosecant are rarely used.

These six trigonometric functions in relation to a right triangle are displayed in the figure. In trigonometry cos tangent tan cotangent cot secant sec and cosecant csc. Finally secant popularly denoted as sec of x is defined as the reciprocal of its cosine function. The secant function usually abbreviated as sec is the reciprocal function of the cosine function.

Cot x 1 cos x.