Home
Class 11
MATHS
If x in R-{0} , then costheta is...

If `x in R-{0}` , then `costheta` is

A

`gtx+(1)/(x)`

B

`=x+(1)/(x)`

C

`nex+(1)/(x)`

D

none of these

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Similar Questions

Explore conceptually related problems

Let R be the set of all real numbers. If , f : R to R be a function such that |f (x) - f (y) | ^(2) le | x -y| ^(3), AA x, y in R, then f'(x) is equal to a)f (x) b)1 c)0 d) x ^(2)

Consider the function f(x)=absx , x in R Show that the function is continious at x=0.

Express i in the form r(costheta+isintheta)

Which of the relations R on the set of the real numbers is an equivalence relation? (b) x R y if x-yge0

If 3sintheta+5costheta=5 then show that 5sintheta-3costheta=+-3 .

The equations x^(3)+4x^(2)+px+q= 0 and x^(3) +6x^(2)+px+r= 0 have two common roots, where p, q, r in R . Then find the equation formed by their uncommon roots.