Chapter 10
Exercise 10 D
Q-1 (a) (i) and (ii)
try and tell me!!
Getting the answers, but not being confirmed with which are at the back.. 
Sorry for the late reply, I was busy in the science section.
Anyway it's obvious the answers from the book are not good.

Let the length to be found be

.
Using pythagoras theorem :
2 = 8.8
2 + (5,/3)
2
2 = 77.44 + 75
2 = 3811/25 ---->

=
1/5(,/3811) sin theta = 8.8/

, cos theta = (5,/3)/

and tan theta = (5,/3)/8.8
NOTE : ,/ stands for square root.
