Please Help Answer is 1,3 Need a detailed explanation

Please Help         
Answer  is 1,3
Need a detailed explanation

Question Image

1 Answers

Sourabh Singh IIT Patna
askIITians Faculty 2104 Points
6 years ago
Use trigopnometric property so that you will get the varible eliminated .

Y = Z as they are moving on same line . and x will follow the compllimentary path

Think You Can Provide A Better Answer ?