Case study-based questions are compulsory. Attempt any 4- sub parts from
each question. Each question carries 1 mark
17. A pole has to be erected at a point on the boundary of a circular park of diameter 13 metres in
such a way that the differences of its distances from two diametrically opposite fixed gates A
and B on the boundary is 7 metres.
Answer the following questions
Answers
Answer:
Step-by-step explanation:
begin mathsize 16px style According space to space the space question comma
CA equals straight a space and space CB equals straight b
CA minus CB equals 7
straight a minus straight b equals 7
straight a equals straight b plus 7......... left parenthesis straight i right parenthesis
AC squared plus BC squared equals AB squared
straight a squared plus straight b squared equals 13 squared equals 169
open parentheses 7 plus straight b close parentheses squared plus straight b squared equals 169 space space space space space from space left parenthesis straight i right parenthesis
Solving space this space we space get
straight b equals 5 equals CB
Hence comma space straight a equals 12 equals CA end style
Answered by Sneha shidid | 20th Aug, 2018, 11:22: AM