Show:
The Basics
Pythagorean
Sum and Difference
Double and Half
Potpourri
100
1 / sin x
What is csc x?
100
sin²x + cos²x
What is 1?
100
sin(a + b)
What is sin a cos b + cos a sin b?
100
sin 2x
What is 2 sin x cos x?
100
csc(-x)
What is csc x?
200
1 / tan x
What is cot x?
200
tan²x + 1
What is sec²x?
200
sin(a - b)
What is sin a cos b - cos a sin b?
200
cos 2x
What is cos²x - sin²x, 1 - 2 sin²x, or 2cos²x - 1?
200
cos(π/2 - x)
What is sin x?
300
1 / sec x
What is cos x?
300
1 + cot²x
What is csc²x?
300
cos(a + b)
What is cos a cos b - sin a sin b?
300
sin(1/2 x)
What is ±√( (1 - cos x) / 2 )?
300
tan(x + nπ)
What is tan x?
400
sin x / cos x
What is tan x?
400
1 - cos²x
What is sin²x?
400
tan(a - b)
What is (tan a - tan b) / (1 + tan a tan b)?
400
cos(1/2 x)
What is ±√( (1 + cos x) / 2 )?
400
sin(π - x)
What is sin x?
500
cos x / sin x
What is cot x?
500
tan²x - sec²x
What is -1?
500
sec(a + b)
What is 1 / (cos a cos b - sin a sin b)?
500
tan 2x
What is 2 tan x / (1 - tan² x) ?
500
cos a cos b
What is 1/2 [cos(a - b) + cos(a + b)]