# Sine Cosine Tangent Quiz Questions and Answers PDF Download eBook p. 25

Sine Cosine Tangent quiz questions and answers, sine cosine tangent MCQs with answers PDF 25 to practice math mock tests for online graduate programs. Practice "Trigonometric Identities" quiz questions with answers, sine cosine tangent Multiple Choice Questions (MCQs) for online college degrees. Free sine cosine tangent MCQs, adjoint and inverse of square matrix, radian to degree conversion, when q(x) has repeated linear factors, double angle identities, sine cosine tangent test prep to learn free online courses.

"2sin(x+45°)sin(x-45°) =", sine cosine tangent Multiple Choice Questions (MCQs) with choices *−cos2x, cos2x, sin2x, and −sin2x* for free online college courses. Practice trigonometric identities questions and answers to improve problem solving skills for online college classes.

## Quiz on Sine Cosine Tangent PDF Download eBook

MCQ: 2sin(x+45°)sin(x-45°) =

- cos2x
- −cos2x
- sin2x
- −sin2x

B

MCQ: Cos(α + β)cos(α - β) =

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

B

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

MCQ: (22 1/2)° =

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

C

MCQ: The additive inverse of a matrix A is

- A
- |A|
- A²
- adj A⁄|A|

D