Join Examsbook
2640 0

Q:

$$ {Cos^4θ +Sin^4θ}={2 \over3} $$ then the value of $$ {Cos^2θ -Sin^2θ+1}$$?

  • 1
    $$ {13 \over15} $$
  • 2
    $$ {14\over15} $$
  • 3
    $$ {15 \over14} $$
  • 4
    $$ {15 \over13} $$
  • Show AnswerHide Answer
  • Workspace

Answer : 4. "$$ {15 \over13} $$"

Are you sure

  Report Error

Please Enter Message
Error Reported Successfully