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Study bachelor degree and masters degree in math questions, double angle identities course online has multiple choice question (MCQs): cosα-sinα/cosα+sinα with options sec2α+tan2α, sec2α-tan2α, csc2α-cot2α and csc2α+cot2α with online eLearning for online competitions like GRE study test for good GRE scores. Learn double angle identities quizzes with problem solving skills assessment test.

Double Angle Identities Quiz

MCQ: Cosα-sinα/cosα+sinα

1. sec2α+tan2α
2. sec2α-tan2α
3. csc2α-cot2α
4. csc2α+cot2α

D

Trigonometric ratios of Allied Angles Quiz

MCQ: Tan(-α) =

1. −tanα
2. tanα
3. cotα
4. cotα

A

Triple Angle Identities Quiz

MCQ: Sin9α =

1. 4cos³3α-3cos3α
2. 3cos³3α-4cos3α
3. 3sin3α-4sin³3α
4. 4sin3α-3sin³3α

C

Nature of roots of quadratic equation Quiz

MCQ: Discriminant of quadratic equation ax² +bx +c = 0 is

1. b² + 4ac
2. 4ac-b²
3. b² - 4ac
4. a² - 4bc

C

Period of Trigonometric Functions Quiz

MCQ: Period of 3cot(x/3) is

1. π

C