Which expression is identical to 11 + sintheta + 11 - sintheta?

  1. 2
  2. 2sec^2theta
  3. 2csc^2theta
  4. sec^2theta
Answer

B) 2sec^2theta

Using sin^2theta + cos^2theta = 1 and the definitions of the ratios, 11 + sintheta + 11 - sintheta = 2sec^2theta. SLO M-09-B-23 · Knowledge

Mathematics MCQ · More Trigonometric Identities MCQs · Practise