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ConceptTrigonometric Identities

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Trigonometric Identities Examples and Solutions

Trigonometric Identities - Proof and Applications of the Identity

sin^{2}A + cos^{2}A = 1

1 + tan^{2}A = sec^{2}A

1+cot^{2}A = cosec^{2}A; 0< A<90^{o}