3 years ago

Sin(3) cos() − cos(3) sin() = sqrt2/2

Mathematics

1 answer:

Orlov [11]3 years ago

7 0

Answer:

a. Recall the double angle identities:

Then

Applying the identity again, we have

as required.

b. Using the result from part (a),

(where is any integer)

Step-by-step explanation:

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