Question

Define $\sin$ and $\cos$ trigonometric functions.

Answer 1

There are a number of trigonometric formulas and identities which denotes the relation between the functions and help to find the angles of the triangle. The six trigonometric functions are $Sine,Co\sin e,Tangent,Secant,Cosecant\mathrm{and}Co\tan gent$. The trigonometric functions are used to find the unknown angle or side of a right-angled triangle.

$Sin$ and $Cos$ are basic trigonometric functions along with the $\tan$ function, in trigonometry.

$Sin$ function: $Sine$ function of an angle is the ratio between the opposite side length to that of the hypotenuse.

$Sin\Theta =\frac{Oppositeside}{Hypotenuse}$

$Cos$ function: Cosine of an angle is the ratio of the length of the adjacent side to the length of the hypotenuse.

$Cos\Theta =\frac{Adjacentside}{Hypotenuse}$