# Trigonometric Identity Quiz

10 Questions  I  By Oxyzen28
The Trigonometric Identity Quiz is a quiz which concentrates only in trigonometric identities. The quiz is made up of 10 questions. The question maybe either true or false or which is the identity of this equation? Just as simple as that. Start now answering. Good luck!

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 1 What is ( Sinx + Cosy )^2 ?
 A. Sin^2x + Cos^2x
 B. 1
 C. 2SinxCosy
 D. SinxCosy + CosxSiny
 E. Sin^2x + 2SinxCosy + Cos^2y
 2 What is Cos2x + Sec2x ?
 A. Cos^2x
 B. 2CosxSecx
 C. 1
 D. Tan^2 2x
 E. Tan^2 x
 3 What is Sinx + Cosx +             1              ?                                        TanxCotx
 A. 1
 B. Sinx + Cosx
 C. Cos^2 xSin^2 x
 D. 2
 E. ______1________ SecxCscx
 4 Is 2Sec^2 xCos^2 x = 2 an identity?
 A. True
 B. False
 C. Maybe
 D. It depends
 5 True or false, Tanx   +          TanySecx         =  Tan ( x + y ) ?                                    Cosx + TanySinx
 A. True
 B. False
 C. Maybe
 D. It depends
 6 Which of these is the identity of Sin 2x?
 A. Cos^2 x + Sin^2 x
 B. 2SinxCosx
 C. SinxCosx + CosxSin x
 D. Sin^2 x
 E. Sin x + Sinx
 7 Is Sin^2 x + Sin^2 ( x + y ) + 2SinxCosxSin ( x + y ) = Sin^2 y ?
 A. True
 B. False
 C. Maybe
 D. It depends
 8 Which of the following is not an identity with Cos2x?
 A. 1 - Sin^2 x
 B. 2Cosx - 1
 C. Cos^2 x - Sin^2 x
 D. 1 - 2Sin^2 x
 9 Is Sec2x =                1               an identity?                 ( 1 - Sinx )( 1 + Sinx)
 A. True
 B. False
 C. Maybe
 D. It depends
 10 Is Sinx + Cosx  = 1 an identity?
 A. True
 B. False
 C. Maybe
 D. it depends
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