# Trigonometry Forum

Trigonometry Help Forum: Graphing trig expressions, identities, angles, applied questions

1. ### Trigonometric Identities

• Replies: 3
• Views: 370
Mar 20th 2015, 08:26 PM
2. ### help trig

• Replies: 2
• Views: 400
Mar 19th 2015, 05:01 AM
3. ### Solve Hyperbolic Equation?? 14 cosh(x) + 8sinh(x) = 12

• Replies: 10
• Views: 1,086
Mar 18th 2015, 02:12 PM
4. ### proof for cos 90 + theta = -sin theta

• Replies: 3
• Views: 3,417
Mar 14th 2015, 03:52 PM
5. ### Trigonometric and hyperbolic identities

• Replies: 2
• Views: 443
Mar 14th 2015, 02:06 PM
6. ### Angle of Depression

• Replies: 2
• Views: 549
Mar 10th 2015, 03:44 AM
7. ### Table calculation doesn't match actual drawing dimensions

• Replies: 1
• Views: 495
Mar 6th 2015, 11:16 AM
8. ### Proving rho=sin(phii/3) is equal to rho^2=0.5

• Replies: 3
• Views: 595
Feb 26th 2015, 07:23 AM
9. ### trig

• Replies: 1
• Views: 426
Feb 25th 2015, 12:56 PM
10. ### prove each identity

• Replies: 4
• Views: 595
Feb 16th 2015, 08:16 PM
11. ### simplify csc θ tan θ sec θ

• Replies: 2
• Views: 931
Feb 16th 2015, 02:44 PM
12. ### Double Angle Identity with tan()

• Replies: 4
• Views: 468
Feb 13th 2015, 10:44 PM
13. ### Trigonometry Questions

• Replies: 4
• Views: 460
Feb 12th 2015, 12:13 PM
14. ### Need help for this maths question

• Replies: 2
• Views: 463
Feb 12th 2015, 06:18 AM
15. ### Trigonometry 180 degree???

• Replies: 3
• Views: 540
Feb 10th 2015, 10:26 PM
16. ### Solution<<>>

• Replies: 1
• Views: 385
Feb 9th 2015, 08:29 AM

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# "trigonometric ratios and trigonometric identities" solution

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