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Anni [7]
3 years ago
10

8. Find the period and amplitude of the function.

Mathematics
1 answer:
Naily [24]3 years ago
3 0
The general equation of the cosine function is
y = a cos nθ
where a is the amplitude 
And n = 2π/period

by comparing the general equation with the given equation which is 
<span>Y = 5 cos 2</span>θ
∴ a = 5  and   n = 2
∴ period = 2π/n = 2π/2 = π
∴ The amplitude = 5   and  the period = π

So, the correct answer is the second option

<span>Period pi, radians; amplitude: 5</span>


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