Home
Class 11
MATHS
Find the value of other five trigonomet...

Find the value of other five trigonometric function `tanx=-5/(12)`, x lies in second quadrant.

Text Solution

Verified by Experts

Given, that `tanx=-5/12`, and x lies in second quadrant.
`therefore tanx=-5/12 rArr cotx=1/(tanx)`
`rArr cotx=1/(-5/12) = 1 xx -12/5 = -12/5`
`(therefore` x lies in second quadrant, therefore, sin and "cosec" ratio willl be positive and the remaining ratio tan, cot and sec will be negative.) then `sec^(2)x=-13/12`
`therefore cos=1/(secx)`
`rArr cosx=1/(-13/12) = 1 xx (-12/13)`
`rArr cosx=-12/13`
`therefore "cosec"^(2)x=cot^(2)x`
`therefore "cosec"^(2)x=1+(-12/5)^(2)= 1+144/25=169/25=(13/5)^(2)`
`rArr "cosec"x=13/5`
`therefore sinx=1/("cosec"x) rArr sinx=1/(13/5) = 1 xx 5/13`
`therefore sinx=5/13`
Therefore, `sinx=5/13`, `"cosec"x=13/5, cosx=-12/13`
`cotx=-12/5, secx=-13/12`. Ans.
Promotional Banner

Topper's Solved these Questions

  • TRIGNOMETRIC FUNCTIONS

    NAGEEN PRAKASHAN ENGLISH|Exercise EXERCISES 3.3|25 Videos
  • TRIGNOMETRIC FUNCTIONS

    NAGEEN PRAKASHAN ENGLISH|Exercise EXERCISES 3.4|8 Videos
  • TRIGNOMETRIC FUNCTIONS

    NAGEEN PRAKASHAN ENGLISH|Exercise EXERCISES 3.1|7 Videos
  • STRAIGHT LINES

    NAGEEN PRAKASHAN ENGLISH|Exercise Exercise|207 Videos

Similar Questions

Explore conceptually related problems

Find the value of other five trigonometric function sinx=3/5 , x lies in second quadrant.

Find the value of other five trigonometric function secx=(13)/5 , x lies in fourth quadrant.

Find the values of the trigonometric function tan (19pi)/3

Find the value of other five trigonometric function cosx=-1/2, x lies in third quadrant.

Find the value of other five trigonometric function cotx=3/4 , x lies in third quadrant.

Find the values of the trigonometric function sin 765^(@)

Find the value of the trigonometric functions : sin 1830^@

Find the values of the trigonometric function cot (-(15pi)/4)

Find the values of the trigonometric function cot (-(15pi)/4)

Find the values of the trigonometric function sin( -11pi/3)