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3 votes
If sin 30º = cos(2x), then x=

2 Answers

4 votes

Answer:

sin 30 = cos 2x

cos60 = cos 2x ( sin(90 - 60) = cos60)

2x = 60

x = 30

User Vladislav Stanic
by
5.9k points
4 votes

Answer:

30°

Explanation:

sin 30º = cos(2x)

sin 30º = cos (90°-30°)

⇒2x=60° ⇒ x=30°

User Xurei
by
4.2k points
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