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Plss solve it... It's urgent. .. Ans = root 5​

Answer»

Answer:

In trigonometric identities do two things.

  • Remember basic identities SIN ^2a + cos^2a= 1, sec^2a-tan^a=1,..
  • USE mathematical operatiob and algebraic identities to simplify diff forms.

here, second TERM becomes cosecA- cotA ,overall COSEC A =√cot^2A+1=✓5



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