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Java Games: Flashcards, matching, concentration, and word search. |
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Trig Identities
This activity provides practice in recognizing trigonometric identites.
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| A | B |
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| (cos x)^2 + (sin x)^2 | 1 |
| (sin x)/(cos x) | tan x |
| 1/(sin x) | csc x |
| (cos x)/(sin x) | cot x |
| 1/(cos x) | sec x |
| sin (x + 360k) | sin x |
| cos (x + 180) | -cos x |
| cos (x + 360k) | cos x |
| sin (x + 180) | -sin x |
| cos (x + y) | cos x cos y - sin x sin y |
| cos (x - y) | cos x cos y + sin x sin y |
| sin ( x + y) | sin x cos y + cos x sin y |
| sin (x - y) | sin x cos y - cos x sin y |
| tan (x + y) | (tan x+tan y)/(1-tan x tan y) |
| tan (x - y) | (tan x-tan y)/(1+tan x tan y)y |
| sin 2x | 2 sin x cos x |
| cos 2x | 1 - 2 (sin x)^2 |
| tan 2x | 2tan x/(1 - (tan x)^2) |
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