Practice trigonometric identities multiple choice questions (MCQs), math test 1 online for exams. Practice triple angle identities MCQs questions and answers on triple angle identities, trigonometric identities, online math learning, basic trigonometry formulas, trigonometric ratios of allied angles with answers. Free trigonometric identities quiz, online study guide has helping answer key with choices as 4cos³α - 3cosα, 4sinα - 3sin³α, 3cos³α - 4cosα and 3sinα - 4sin³α of multiple choice questions as cos3α = to test learning skills for viva exam preparation and job's interview questions. Study to learn triple angle identities quiz questions to learn online MCQs for competitive exam preparation test.

MCQ. Cos3α =

1. 4sinα - 3sin³α
2. 4cos³α - 3cosα
3. 3cos³α - 4cosα
4. 3sinα - 4sin³α

A

MCQ. Tan(α + β) =

1. tanα-tanβ/1 + tanαtanβ
2. tanα+tanβ/1 - tanαtanβ
3. cotα+cotβ/1-cotαcotβ
4. cotα-cotβ/1 + cotαcotβ

B

MCQ. Cos(-435°) =

1. cos15°
2. −cos15°
3. −sin15°
4. sin15°

D

MCQ. Cosθ + cosπ =

1. −2sin(θ + π/2)sin(θ-π/2)
2. 2cos(θ + π/2)sin(θ-π/2)
3. 2cos(θ + π/2)cos(θ-π/2)
4. None of Above

C

MCQ. If tanθ < 0, sinθ < 0, then the terminal arm of the angle lies in the quadrant

1. 1
2. 2
3. 3
4. 4

A