MAT 266 Exam #1 Question and
answers correctly solved 2025/2026
sin(Θ)^2 + cos(Θ)^2 - correct answer ✔1
tan(Θ) - correct answer ✔sin(Θ)/cos(Θ)
csc(Θ) - correct answer ✔1/sin(Θ)
sec(Θ) - correct answer ✔1/(cos(Θ)
cot(Θ) - correct answer ✔1/tan(Θ)
sin^2(Θ) - correct answer ✔(1-cos2Θ)/2
cos^2(Θ) - correct answer ✔(1+cos2Θ)/2
(sin(x))' - correct answer ✔cos(x)
(cos(x))' - correct answer ✔-sin(x)
(tan(x))' - correct answer ✔(1/cos^2(x))
(cot(x))' - correct answer ✔(-1/sin^2(x))
answers correctly solved 2025/2026
sin(Θ)^2 + cos(Θ)^2 - correct answer ✔1
tan(Θ) - correct answer ✔sin(Θ)/cos(Θ)
csc(Θ) - correct answer ✔1/sin(Θ)
sec(Θ) - correct answer ✔1/(cos(Θ)
cot(Θ) - correct answer ✔1/tan(Θ)
sin^2(Θ) - correct answer ✔(1-cos2Θ)/2
cos^2(Θ) - correct answer ✔(1+cos2Θ)/2
(sin(x))' - correct answer ✔cos(x)
(cos(x))' - correct answer ✔-sin(x)
(tan(x))' - correct answer ✔(1/cos^2(x))
(cot(x))' - correct answer ✔(-1/sin^2(x))
