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4. Which trigonometric expression is equal to cos 72°? A. cos 55° B. cos 50° C. sin 61° D. sin 18°

4 Which Trigonometric Expression Is Equal To Cos 72 A Cos 55 B Cos 50 C Sin 61 D Sin 18 class=

Answer :

REESERLIN REESERLIN

Answer:

D. sin 18°

Step-by-step explanation:

sin 18 because 18 + 72 = 90

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