If angle theta is an acute angle such that cos theta =1/4, find sin theta/2

The answer is ⇒ sinФ/2 = 0.612

Step-by-step explanation:

∵ cosФ = 1/4

∴ Ф = cos^-1 1/4 = 83.91°

∴ Ф/2 = 83.91 ÷ 2 = 41.96°

∴ sinФ/2 = 0.612

Step-by-step explanation:

Recall and apply the following formula;

Since is acute,

Given , then

the answer on ed. is:

c. "the graph of f(x) has exactly two x-intercepts."

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