# Sine Cosine Tangent Quiz Questions and Answers 25 PDF Book Download

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## Quiz on Sine Cosine Tangent Worksheet 25Quiz Book Download

Sine Cosine Tangent Quiz

MCQ: 2sin(x+45°)sin(x-45°) =

- cos2x
- −cos2x
- sin2x
- −sin2x

B

Double Angle Identities Quiz

MCQ: Cos(α + β)cos(α - β) =

- cos²α-sin²β
- sin²α-cos²β
- 2cosα
- 2sinα

B

when Q(x) has repeated linear factors Quiz

MCQ: Partial fractions of 1/(x²-1) are equivalent to

- Ax+B/(x²-1)
- A/(x+1) + B/(x-1)
- A/(x+1)
- B/(x-1)

B

Radian to Degree Conversion Quiz

MCQ: (22 1/2)° =

- π/2 radians
- π/4 radians
- π/8 radians
- 180π radians

C

Adjoint & inverse of square Matrix Quiz

MCQ: Additive inverse of a matrix A is

- A
- |A|
- A²
- adj A⁄|A|

D