Trigonometric Identities Quiz! Math Trivia
10 Questions
| Total Attempts: 1679
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Questions and Answers
- 1.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
- 2.Is Sec2x = 1 an identity? ( 1 - Sinx )( 1 + Sinx)
- A.
True
- B.
False
- C.
Maybe
- D.
It depends
- 3.True or false, Tanx + TanySecx = Tan ( x + y ) ? Cosx + TanySinx
- A.
True
- B.
False
- C.
Maybe
- D.
It depends
- 4.Is Sin^2 x + Sin^2 ( x + y ) + 2SinxCosxSin ( x + y ) = Sin^2 y ?
- A.
True
- B.
False
- C.
Maybe
- D.
It depends
- 5.What is ( Sinx + Cosy )^2 ?
- A.
Sin^2x + Cos^2x
- B.
1
- C.
2SinxCosy
- D.
SinxCosy + CosxSiny
- E.
Sin^2x + 2SinxCosy + Cos^2y
- 6.What is Cos2x + Sec2x ?
- A.
Cos^2x
- B.
2CosxSecx
- C.
1
- D.
Tan^2 2x
- E.
Tan^2 x
- 7.What is Sinx + Cosx + 1 ? TanxCotx
- A.
1
- B.
Sinx + Cosx
- C.
Cos^2 xSin^2 x
- D.
2
- E.
______1________ SecxCscx
- 8.Is 2Sec^2 xCos^2 x = 2 an identity?
- A.
True
- B.
False
- C.
Maybe
- D.
It depends
- 9.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
- 10.Is Sinx + Cosx = 1 an identity?
- A.
True
- B.
False
- C.
Maybe
- D.
it depends
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