Question

Consider the derivation of sin(2x).

Where is the error?

Step 2 should read = cos(x)cos(x) – sin(x)sin(x).
Step 2 should read = sin(x)cos(x) – cos(x)sin(x).
Step 3 should read = – 2sin(x)cos(x).
Step 3 should read = 2sin(x)cos(x).

Answer 1

D. Step 3 should read = 2sin(x)cos(x)

Explanation:

did the test on edge

Answer 2

D

Explanation:

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