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MAX value of sum of sin and cos function

Trigonometry equalities, inequalities and expressions - sin, cos, tan, cot
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MAX value of sum of sin and cos function

Postby punchface2000 » Fri Mar 26, 2021 8:15 am

How to find the peak (absolute) value of
s(t) = 3cos(5[tex]\pi[/tex]t )- 2cos(7[tex]\pi[/tex]t) - cos(9[tex]\pi[/tex]t)
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