My answer for (i) matches that of the text book. In (ii), however, I have not arrived at the correct result. Can anyone help me out?
Many thanks.
Q. (i) When & , & , express in the form . (ii) Hence, or otherwise show that .
Attempt: (i) 1st: If , then
2nd: Similarly,
3rd:
(ii) 1st:
2nd: Taking the values from (i),
3rd: Similarly,
4th: Thus, from the 1st step: