answersLogoWhite

0


Best Answer

Assuming you mean -90 degrees, not radians:

tan (-90) = [sin(-90)]/[cos(-90)] = (-1) / 0

You cannot divide by zero. tan (-90) is undefined/does not exist.

User Avatar

Wiki User

15y ago
This answer is:
User Avatar

Add your answer:

Earn +20 pts
Q: What is the value of tan -90?
Write your answer...
Submit
Still have questions?
magnify glass
imp
Related questions

In Triangle ABC what is the value of Tan A by 2 in terms of its sides if angle B is 90 degrees?

If B is 90 degrees, Tan A is BC / AB. But I don't know what you mean by Tan A by 2.


Why tan A 90 degree is not solve?

I am not sure what "tan A 90 degree" means. tan(90 degrees) is an expression that is not defined and so cannot be solved. One way to see why that may be so is to think of tan(x) = sin(x)/cos(x). When x = 90 degrees, sin(90) = 1 and cos(90)= 0 that tan(90) = 1/0 and since division by 0 is not defined, tan(90) is not defined.


What is tan x degree 90?

To solve for tan x degree 90 you do a few things. First, if x equals 90, then this equals 1.5597 radian or 89.36 degrees. This is the easiest way to solve tan x degree 90.


Tan 90 degree?

It is not defined.


By using trigonometric identities find the value of sin A if tan A a half?

The value of tan A is not clear from the question.However, sin A = sqrt[tan^2 A /(tan^2 A + 1)]


What is tan20tan32 plus tan32tan38 plus tan38tan20?

Oh honey, you're throwing some trigonometry at me? Alright, buckle up. The sum of tan20tan32 plus tan32tan38 plus tan38tan20 is equal to 1. Just plug in those values and watch the magic happen. Math can be sassy too, you know.


How do you find the value of tan 135?

tan(135) = -tan(180-135) = -tan(45) = -1


What is the value of tan 22.5 degrees?

tan(22.5)=0.414213562


What is the limit of arc tan?

The principal range of arc tan is an angle in the open interval (-pi/2, pi/2) radians = (-90, 90) degrees.


What is tan of 90 degrees?

On the unit circle at 90 degrees the 90 degrees in radians is pi/2 and the coordinates for this are: (0,1). The tan function = sin/cos. In the coordinate system x is cos and y is sin. Therefore (0,1) ; cos=0, & sin=1 . Tan=sin/cos so tan of 90 degrees = 1/0. The answer of tan(90) = undefined. There can not be a 0 in the denominator, because you can't devide by something with no quantity. Something with no quantity is 0. Or, on a limits point of view, it would be infinity.


Where is tan undefined in trig?

90 degrees is one


What is tan x degrees equals 90?

tan0.15