Trigonometric Identities Examples
Example 1
Use the Pythagorean Theorem to find tan ɵ, given in Quadrant III. |
Example 2
If sin ɵ = -½ in Quadrant IV, what is tan ɵ? |
Example 3
If in Quadrant II, what is sin ɵ? |
Example 4
Use the Pythagorean identity to find sin ɵ, given cos ɵ = -0.4. |
Example 5
Use a sum or difference identity to find the exact value of sin(105°). |
Example 6
Use a sum or difference identity to find the exact value of cos(120°). |
Example 7
Use a sum or difference identity to find the exact value of cos(15°). |
Example 8
Use a sum or difference identity to find tan(165°). |