Login

In triangle PQR, PS is the bisector of angle QPR and PT perpendicular QR. Show that angle TPS = 1/2 (angle Q-angle R).

Its urgent ...Answer Fast Please.....

given :PS is the bisector

PT is perpendicular

to prove : TPS = 1/2 (Q-R)

solution : angle qps = angle rps

angle qpt + angle tps = angle spr

in triangle prt,

angle ptq = 900

angle qpt + angle qpt = 900

angle q + 900 - angle qpt

in triangle prt,

angle ptr = 900

angle r + angle tpr +900

angle r + (angle tps + angle spr) - angle qpt

angle q - angle r = angle tps + (angle spr - angle qpt)

angle q - angle r = angle tps + angle tps

angle tps = 1/2 (angle q - angle r)

  • -11
View Full Answer

pls....

thumbs uppp....

  • -6

Can U make it some more clear? Something goes wrong..

  • -8
Given; PS is bisector of angle QPR 
            PT is perpendicular to QR

To Prove; angle TPS = 1/2 (angle Q - angle R)

Solutio; We know that angle QPS = 1/2 angle P                                                                                                         (1)
            
              angle Q + angle QPT = 90 degree
              angle QPT = 90 degree -angle Q                                                                                                                   (2)

              On putting equations (1) and (2)              
              angle TPS = angle QPS - angle QPT
                                = 1/2 angle P - ( 90 - angle Q )
                                = 1/2 angle P - 90 + angle Q 
                                = 1/2 angle P - 1/2 (angle Q + angle P + angle R) + angle Q
                                = 1/2 angle P - 1/2 angle Q - 1/2 angle P - 1/2 angle R + angle Q                              
                                = -1/2 angle Q - 1/2 angle R + angle Q                             (+ve and -ve 1/2 angle  P got cancled )
 
                                    by takig LCM in angle Q we get
                                   -1/2 angle Q + 2/2 angle Q - 1/2 angle R 
                                    (-1/2 + 2/2) angle Q - 1/2 angle R

                                = 1/2 angle Q - 1/2 angle R    
              angle TPS = 1/2 ( angle Q -1/2 angle R )                                                                                (Hence proved)
  • 4
very long
  • 5
Please make this
  • -7
minu mol u are right  even i didnt get the answer
  • 6
Best solution to this question is attached below

  • -4
#Raj Go to this link for best answer https://youtu.be/v7HCHlAGoBk
  • 3
https://youtu.be/v7HCHlAGoBk
  • 1
What are you looking for?