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AP EAMCET · Maths · Trigonometric Ratios & Identities

If \(\sin \theta+\operatorname{cosec} \theta=2\), then the value of \(\sin ^{10} \theta+\operatorname{cosec}^{10} \theta\) is equal to

  1. A \(2\)
  2. B \(2^{10}\)
  3. C \(2^9\)
  4. D \(2^8\)
Verified Solution

Answer & Solution

Correct Answer

(A) \(2\)

Step-by-step Solution

Detailed explanation

Given, \(\sin \theta+\operatorname{cosec} \theta=2\) It is possible only \(\sin \theta=\operatorname{cosec} \theta=1\) \(\therefore \sin ^{10} \theta+\operatorname{cosec}^{10} \theta=(1)^{10}+(1)^{10}=1+1=2\)