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04-03-2021
Mathematics

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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=

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reeserl reeserl

04-03-2021

Answer:

D. sin 18°

Step-by-step explanation:

sin 18 because 18 + 72 = 90

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