Question

Asked Apr 18, 2019

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Write the product as a sum or difference with positive arguments

Step 1

To calculate the sum or difference with positive argument for the provided trigonometric expression **sin(4α)sin(7α)**. Now, use the formula of product of the trigonometric function and simplify it further.

Step 2

The product formula of trigonometric function is shown below,

Step 3

Now, consider the provided trigonometric expression **sin(4α)sin(7α)** and apply ...

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