Chapter 5

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Example 5 Use the half-angle identities to find exact values for a) sin π 12 and b) tan π 12 .
Example 6 For cos θ = − 7 25 sin θ 2 and b) cos θ 2 . , and θ in the 3rd quadrant, find exact values of a)
Page 1: Ch 5.1 : More on verifying identiti
Page 5 and 6: Example 1 Prove that (1 − tan t)
Page 7 and 8: Example 3 Prove that cos t 1 + sec
Page 9 and 10: Class Exercises Verify the followin
Page 11 and 12: 5.2: The Sum and Difference Identit
Page 13: Sum and difference identities for T
Page 16 and 17: Example 4 Use the sum or difference
Page 18 and 19: Class Exercise Given α and β are
Page 20 and 21: Example 2 : Combining sum and doubl
Page 22 and 23: The power reduction identities Theo
Page 24: Half-Angle Identities Theorem ◮ c
Page 29: The Product-to-Sum Identities Proof
Page 32: The Sum-to-Product Identities (for
Page 35 and 36: Example Write the sum as a product

Chapter 5

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