Home
Class 11
MATHS
If sin theta=-4/5,180^(@)ltthetalt270^(@...

If `sin theta=-4/5,180^(@)ltthetalt270^(@)` then find `"sin"theta/2, "cos"theta/2`

Text Solution

Verified by Experts

The correct Answer is:
i) `2/sqrt5 , (-1)/sqrt5`
ii) `56/33`
Promotional Banner

Topper's Solved these Questions

  • MULTIPLE & SUBMULTIPLE ANGLES

    AAKASH SERIES|Exercise EXERCISE-1 |35 Videos
  • MULTIPLE & SUBMULTIPLE ANGLES

    AAKASH SERIES|Exercise EXERCISE-II|52 Videos
  • MULTIPLE & SUBMULTIPLE ANGLES

    AAKASH SERIES|Exercise EXERCISE 3.1 ( LONG ANSWER QUESTION )|9 Videos
  • MULTIPLE & SUBMULTIPLE

    AAKASH SERIES|Exercise PRACTICE SHEET (EXERCISE - II) (LEVEL - II) (Linked Comprehension Type Questions)|5 Videos
  • MULTIPLE PRODUCT OF VECTORS

    AAKASH SERIES|Exercise PRACTICE EXERCISE|62 Videos

Similar Questions

Explore conceptually related problems

If costheta=-3/5 and 180^(@)ltthetalt270^(@) then "tan"theta/2=

If 180^(@) lt theta lt 270^(@) , sin theta =-3//5 , then cos theta //2=

If 180^(@) lt theta lt 270^(@) , tan theta = 5//12 , " then " cos 3 theta =

If 180^(@) lt theta lt 270^(@), sin theta =-4//5 , " then " tan theta //2=

If 270^(@)ltthetalt360^(@) and cos theta=1/4 find "tan"theta/2 .

If 180^(@) lt theta lt 270^(@) and sin theta = -5//13 then 5 cot^(2) theta + 12 tan theta + 13 "cosec" theta =