trig formulas
Quiz yourself by guessing what should be in
each of the black rectangles below before clicking
on it to display the answer.
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| trig function |  |
|
| equals | |
|
| sin^2x + cos^2X | 1 |
| 1 + tan^2X | sec^2x |
| 1 + cot^2X | csc^2 X |
| sin(-X) | -sinX |
| cos(-X) | cosX |
| tan (-X) | -tanX |
| sin(A + B) | sinAcosB+sinBcosA |
| sin(A-B) | sinAcosB-sinBcosA |
| cos(A + B) | cosAcosB-sinAsinB |
| cos(A-B) | cosAcosB+sinAsinB |
| tanx | sinx/cosx |
| tan x | 1/cotx |
| cotx | cosx/sinx |
| cotx | 1/tanx |
| secx | 1/cosx |
| cscx | 1/sinx |
| cos[ (pi/2) -x] | sin X |
| sin [ (pi/2) -x] | cosX |
|
