The value of (sin221° + sin269°) is:
Answer & explanation
Correct answer: option 4
sin221° + sin269°
= sin221° + cos221° (sinθ = cos(90-θ))
= 1 (sin2θ + cos2θ = 1)
The value of (sin221° + sin269°) is:
Correct answer: option 4
sin221° + sin269°
= sin221° + cos221° (sinθ = cos(90-θ))
= 1 (sin2θ + cos2θ = 1)