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If cos 25°=K , determine cos50°

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If cos 25°=K , determine cos50°

asked Feb 27, 2022 168k views

5 votes

If cos 25°=K , determine cos50°

Mathematics
college

Acpmasquerade asked

by Acpmasquerade

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1 Answer

6 votes

Answer:

cos 50⁰ = cos 2.25⁰ = 2cos²25⁰ - 1 = 2K² - 1

Petrunov answered Mar 5, 2022

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