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17.3 - Copy - 17-3 Relations Among the Trigonometric Ratios...

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17-3 Relations Among the Trigonometric Ratios A) By Pythagoreans theorem we have… Now divide both sides by We can rewrite this as How else can we represent this equation? B) Theorem 17-1 a) For every , ( a. , C) Theorem 17-2 a) For every ,
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a. or b) Proof D) Theorem 17-3 a) If and are complementary, then a. or for degrees we have Proof: D) Strategies 1) Simplify the more complicated side of the identity until it is identical to
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