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PreCalculus - Trigonometry: Trig Identities (5 of 57) Verify the Identity: 1
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In this video I will verify the identity (1-sinx)/(1+sinx)=(secx-tanx)^2.

PreCalculus - Trigonometry: Trig Identities (5 of 57) Verify the Identity: 1

PreCalculus - Trigonometry: Trig Identities (8 of 57) Verify the Identity: 4

PreCalculus - Trigonometry: Trig Identities (6 of 57) Verify the Identity: 2

PreCalculus - Trigonometry: Trig Identities (7 of 57) Verify the Identity: 3

PreCalculus - Trigonometry: Trig Identities (20 of 57) Proof Using Addition & Subtraction Formulas

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