Answers

  • JNZ
  • Ambitious
2015-09-27T21:10:48+05:30
We know trigonometric identities
sin^2∆+cos^2∆=1
take ∆ as thita
and sec^2∆=1+tan^2∆

so using this identities equation becomes
(cos^2∆)(sec^2∆)
and we also know that
cos∆=1/sec∆
so answer is 1
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