Asked by lindsay
Given the function
y= 4cos(2x+90degrees)-3, Find the value of y when x =30 degrees.
y= 4cos(2x+90degrees)-3, Find the value of y when x =30 degrees.
Answers
Answered by
Steve
just plug it in:
y = 4cos(2(30)+90)-3
= 4cos(150)-3
= 4(-cos(30))-3
= 4(-√3/2)-3
= -2√3 - 3
y = 4cos(2(30)+90)-3
= 4cos(150)-3
= 4(-cos(30))-3
= 4(-√3/2)-3
= -2√3 - 3
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