1. Grade 11 Functions (MCR3U) Unit 4: Trigonometry Trigonometric Identities 2
Mr. Choi
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2. Formulas (Overview) http://rhhsmath.ca/teachers/choi/TrigFormula.pdf
Trigonometric Identities 2
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3. Formulas (Overview) http://rhhsmath.ca/teachers/choi/TrigFormula.pdf
Trigonometric Identities 2
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4. Six Trigonometric Ratios
Trigonometric Identities 2
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5. Trigonometric Identities 2
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6. Trigonometric Identities 2
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7. Trigonometric Identities 2
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8. Visit the Math department web site for more identities for Grade 12!!
A trigonometric identity is a relation among trigonometric ratios that is true for all angles for which both sides are defined.
The basic identities are being introduced in Trigonometric Identities (Day 1)
Visit the Math department web site for more identities for Grade 12!!
They are: i) Reciprocal Identities
ii) Quotient Identities
iii) Pythagorean Identities
iv) Acute angles formulas
Step 1 : Start from the complicated side;
Step 2: Apply the identities and the objectives are to match the other side through simplifications.
(Sometime you might have to simplify both sides and compare them)
Trigonometric Identities 2
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9. Example 1: Trigonometric Identities Prove:
Method 2
Trigonometric Identities 2
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10. Example 1: Trigonometric Identities Prove:
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11. Example 1: Trigonometric Identities Prove:
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12. Example 1: Trigonometric Identities Prove:
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13. Example 1: Trigonometric Identities Prove:
End of day 2 (Optional)
Trigonometric Identities 2
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14. Homework Text Book: Day 2: Trigonometric Identities 2 Work Sheet:
Day 3: P. 273 #1-8
Check the website for updates
Trigonometric Identities 2
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15. Example 1: Trigonometric Identities Prove:
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16. Example 1: Trigonometric Identities Prove:
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17. Example 1: Trigonometric Identities Prove:
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18. Example 1: Trigonometric Identities Prove:
© 2018 E. Choi – MCR3U - All Rights Reserved

19. Homework Text Book: Day 2: Trigonometric Identities 2 Work Sheet:
Day 3: P. 273 #1-8
Check the website for updates
Trigonometric Identities 2
© 2018 E. Choi – MCR3U - All Rights Reserved

20. End of lesson Trigonometric Identities 2
© 2018 E. Choi – MCR3U - All Rights Reserved