Question

Find tan 90°
A)1
B)0
C)Undefined
D)-1

Answer 1

C)Undefined

Not defined

Explanation:

According to research ,

Tangent function denotes that for a given right-angled triangle, the tan of angleθ is equal to the ratio of the opposite side to the angle and adjacent side or base.

Tan θ = Opposite Side/Adjacent Side

We can also represent the tangent function as the ratio of the sine function and cosine function.

∴ Tan θ =Sin θ /Cos θ

So, tan 90 degrees in terms of ratio is,

Tan 90°=Sin 900 / Cos90°

From the trigonometric table, we know,

Sin 90° = 1

And,

Cos90° = 0

∴ Tan 90°= 1/0 = Undefined

That means, we cannot define Tan 900 value.

My source : The internet .

Answer 2

Undefined

Explanation:

For a unit circle, which has a radius as 1, we can derive the tangent values of all the degrees. With the help of a unit circle drawn on the XY plane, we can find out all the trigonometric ratios and values.