Correct! But we write in stead of to indicate the sine function.
I'm teaching myself Trigonometry & Precalculus, so please bear with me if possible. I have a book called "Mathematics for the international student".
1.
2.
3.
If the amplitude of the normal sin function is 1.
Then I'm assuming the amplitude changes when the function is the product of something.
1. 3
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3. -2