sec of theta
1/cos theta
The trigonometric function secant (sec) of an angle theta (θ) is equal to the reciprocal of cosine (cos) of the same angle. In other words,
sec(θ) = 1/cos(θ)
Therefore, to find the secant of theta, you first need to determine the value of cosine of the angle theta. You can do this by using a calculator or looking up the cosine values in a table. Once you have the cosine value, you can take its reciprocal to find the secant. For example,
If cos(θ) = 0.8,
then sec(θ) = 1/cos(θ) = 1/0.8 = 1.25.
Therefore, the secant of the angle theta is equal to 1.25. Note that the secant function is undefined for certain values of theta where cosine is equal to zero.
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