Which expression is identical to (sectheta + tantheta)(sectheta - tantheta)?

  1. 0
  2. 1
  3. 2tantheta
  4. sec^2theta
Answer

B) 1

Using sin^2theta + cos^2theta = 1 and the definitions of the ratios, (sectheta + tantheta)(sectheta - tantheta) = 1. SLO M-09-B-23 · Knowledge

Mathematics MCQ · More Trigonometric Identities MCQs · Practise