Practice double angle identities multiple choice questions (MCQs), math test 1 for online exams. Practice double angle identities MCQs questions and answers on double angle identities with answers. Free double angle identities quiz, online study guide has helping answer key with choices as cotαcotβ+1/cotα-cotβ, cotαcotβ-1/cotα+cotβ, cotαcotβ+1/cotα+cotβ and none of above of multiple choice questions as cot(α + β) = to test learning skills for viva exam preparation and job's interview questions. Study to learn double angle identities quiz questions with online learning MCQs for competitive exam preparation test.

MCQ. Cot(α + β) =

1. cotαcotβ-1/cotα+cotβ
2. cotαcotβ+1/cotα-cotβ
3. cotαcotβ+1/cotα+cotβ
4. None of Above

A

MCQ. Cos(α + β)cos(α - β) =

1. cos²α-sin²β
2. sin²α-cos²β
3. 2cosα
4. 2sinα

B

MCQ. Cosecθ+2cosec2θ/secθ =

1. tanα/2
2. −tanα/2
3. −cotα/2
4. cotα/2

B

MCQ. 1 + tanαtan2α =

1. −sec2α
2. −cosec2α
3. cosec2α
4. sec2α

D

MCQ. 1 - cosα/sinα =

1. tanα/2
2. −tanα/2
3. −cotα/2
4. None of Above

A