Question

answer this question. ​

Answer 1

Answers are :-

$= > taking \: postive \: sign\: \: \: \: \\ k = 1 \div \sqrt{2} \\ = > taking \: negative \: sign \: \\ k = - 1 \div \sqrt{2}$

Answer 2

Step-by-step explanation:

hope this will help you