Fundamentals of trigonometry

Written by Hassan Raza (Mathematics)

Class 11 · Mathematics · 8 questions

Name: ____________________ Date: ____________

180 degrees is equal to how many radians?
- A 2 pi
- B 1
- C pi / 2
- D pi
sin(90 degrees) equals:
- A 0
- B -1
- C 1
- D 1/2
The length of an arc of radius 5 cm subtending an angle of 2 radians is:
- A 10 cm
- B 2.5 cm
- C 25 cm
- D 7 cm
tan x is equal to:
- A sin x / cos x
- B cos x / sin x
- C sin x cos x
- D 1 / sin x
sin(2x) is equal to:
- A sin² x
- B cos² x - sin² x
- C 2 sin x cos x
- D 2 sin x
cos² x - sin² x equals:
- A sin 2x
- B tan 2x
- C 1
- D cos 2x
sin(A + B) equals:
- A sin A sin B + cos A cos B
- B sin A cos B + cos A sin B
- C cos A cos B
- D sin A + sin B
The period of sin x is:
- A 2 pi
- B pi / 2
- C pi
- D 4 pi

Answer key

1. D, 2. C, 3. A, 4. A, 5. C, 6. D, 7. B, 8. A