Trigonometry Examples

$\sec (x) = \frac{13}{12}$ , $\cot (x) = \frac{12}{5}$

Step 1

To find the value of $\cos (x)$ , use the fact that $\frac{1}{\sec (x)}$ then substitute in the known values.

$\cos (x) = \frac{1}{\sec (x)} = \frac{1}{\frac{13}{12}}$

Step 2

Simplify the result.

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Multiply the numerator by the reciprocal of the denominator.

$\cos (x) = \frac{1}{\sec (x)} = 1 (\frac{12}{13})$

Multiply $\frac{12}{13}$ by $1$ .

$\cos (x) = \frac{1}{\sec (x)} = \frac{12}{13}$

Step 3

To find the value of $\tan (x)$ , use the fact that $\frac{1}{\cot (x)}$ then substitute in the known values.

$\tan (x) = \frac{1}{\cot (x)} = \frac{1}{\frac{12}{5}}$

Step 4

Simplify the result.

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Multiply the numerator by the reciprocal of the denominator.

$\tan (x) = \frac{1}{\cot (x)} = 1 (\frac{5}{12})$

Multiply $\frac{5}{12}$ by $1$ .

$\tan (x) = \frac{1}{\cot (x)} = \frac{5}{12}$

Step 5

To find the value of $\sin (x)$ , use the fact that $\tan (x) = \frac{\sin (x)}{\cos (x)}$ so $\sin (x) = \tan (x) \cdot \cos (x)$ then substitute in the known values.

$\sin (x) = \tan (x) \cdot \cos (x) = \frac{5}{12} \cdot \frac{12}{13}$

Step 6

Simplify the result.

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Cancel the common factor of $12$ .

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Cancel the common factor.

$\sin (x) = \tan (x) \cdot \cos (x) = \frac{5}{12} \cdot \frac{12}{13}$

Rewrite the expression.

$\sin (x) = \tan (x) \cdot \cos (x) = 5 \cdot \frac{1}{13}$

Combine $5$ and $\frac{1}{13}$ .

$\sin (x) = \tan (x) \cdot \cos (x) = \frac{5}{13}$

Step 7

To find the value of $\csc (x)$ , use the fact that $\frac{1}{\sin (x)}$ then substitute in the known values.

$\csc (x) = \frac{1}{\sin (x)} = \frac{1}{\frac{5}{13}}$

Step 8

Simplify the result.

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Multiply the numerator by the reciprocal of the denominator.

$\csc (x) = \frac{1}{\sin (x)} = 1 (\frac{13}{5})$

Multiply $\frac{13}{5}$ by $1$ .

$\csc (x) = \frac{1}{\sin (x)} = \frac{13}{5}$

Step 9

The trig functions found are as follows:

$\sin (x) = \frac{5}{13}$

$\cos (x) = \frac{12}{13}$

$\tan (x) = \frac{5}{12}$

$\cot (x) = \frac{12}{5}$

$\sec (x) = \frac{13}{12}$

$\csc (x) = \frac{13}{5}$

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