Basic Trig Functions - LibertyPrecal



Special Right Triangles name ________________________

Find the missing side of the following right triangles, then fill in the missing trigonometric ratios.

1. 2. 3.

sin [pic]= ________ sin [pic]= ________ sin [pic]= ________

cos [pic]= ________ cos [pic]= ________ cos [pic]= ________

tan [pic]= ________ tan [pic]= ________ tan [pic]= ________

What is [pic]? ________ What is [pic]? ________

Find the missing sides of the following Special Right Triangles.

4. If [pic], find the length of [pic]. 5. If [pic], find the length of [pic].

6. If [pic], find the length of [pic]and [pic]. 7. If [pic], find the value of [pic].

8. If [pic], find the lengths of [pic] and [pic]. 9. If [pic], find the lengths of [pic] and [pic].

Draw the angle and then use your reference angle and special right triangles to find the exact value.

10. tan 225( = _____________ 11. cos 30( = _____________ 12. sin 120( = _____________

13. sin [pic]= _____________ 14. cos [pic] = _____________ 15. tan [pic]= ____________

16. cos 210( = ____________ 7. sin 300( = ____________ 18. tan [pic]= ____________

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1

x

[pic]

1

x

[pic]

3

x

5

[pic]1

[pic]1

[pic]1

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