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Use a calculator to evaluate the trigonometric function for the indicated value.Round your answer to four decimal places.

Use a calculator to evaluate the trigonometric function for the indicated value.Round-example-1
User Yttrium
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1 Answer

4 votes

Given:

There are given the trigonometric funtion:


sec(20^(\circ)20^(\prime)18^(\prime)^(\prime))

Step-by-step explanation:

According to the question:

First, we need to convert all minutes into degrees.

So,

To find the minute to a degree, we need to divide by 60 degrees.

Then,


\begin{gathered} 20^(\prime)=(20)/(60) \\ =0.33^(\circ) \end{gathered}

Then,


1^(\prime)^(\prime)=(1)/(60)^(\prime)

Then,


\begin{gathered} 18^(\prime)^(\prime)=(18)/(60)^(\prime) \\ =0.3^(\prime) \end{gathered}

Then,


\begin{gathered} 0.3^(\prime)=(0.3)/(60)^(\circ) \\ =0.005^(\circ) \end{gathered}

So,

The final trigonometric function will be:


sec(20^(\circ)+0.33^(\circ)+0.005^(\circ))=sec(20.335^(\circ))

Then,

The value of the given sec function is:


sec(20.335^(\circ))=(1)/(cos(20.335^(\circ)))

Then,


\begin{gathered} sec(20.335^{\operatorname{\circ}})=\frac{1}{cos(20.335^{\operatorname{\circ}})} \\ =(1)/(0.9) \\ =1.11 \end{gathered}

Final answer:

Hence, the value of the given expression is 1.11

User Zpasternack
by
7.8k points

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