Which expression is identical to (sintheta + costheta)^2?

  1. 1 + 2sinthetacostheta
  2. 1 - 2sinthetacostheta
  3. 1
  4. 2
Answer

A) 1 + 2sinthetacostheta

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

Mathematics MCQ · More Trigonometric Identities MCQs · Practise