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Which of the following is equivalent to 2 cos²(x) - cos(2x) ? a. sin(2x) b. sin²(x) c. 1 d. 2

Which of the following is equivalent to 2 cos²(x) - cos(2x) ? a. sin(2x) b. sin²(x) c. 1 d. 2
asked 78.3k views
3 votes
Which of the following is equivalent to

2 cos²(x) - cos(2x) ?

a. sin(2x)
b. sin²(x)
c. 1
d. 2

asked
User Carlos Nantes
by
7.5k points

1 Answer

3 votes

Answer:

Option c ) 1

Explanation:

[ Refer to the attachment ]

  • Sin²x + Cos²x = 1

Cos²x = 1 - Sin²x

  • Cos2x = 1 - 2Sin²x

Which of the following is equivalent to 2 cos²(x) - cos(2x) ? a. sin(2x) b. sin²(x-example-1
answered
User Muhammad Raja
by
7.7k points
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