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# secx

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## What is secx? - Answers

secx is the inverse of cosx. secx=1/cosx. A secant is also a line drawn through the graph that touches two points on a function.

## Derivative of sec(x) (Secant) | Detailed Lesson

Secant is the reciprocal of the cosine. The secant of an angle designated by a variable x is notated as sec(x). The derivative rule for sec(x) is given as: d ⁄ dx sec(x) = tan(x)sec(x)

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## What is the derivative of sec x? | Socratic

secx = 1 cosx. We know d dx cosx = − sinx - keep that in mind because we're going to need it. Our problem is: d dx secx. Since secx = 1 cosx, we can write this as: d dx 1 cosx. We can find this derivative using the quotient rule: d dx u v = u'v −uv' v2. In our case, u = 1 → u' = 0 and v = cosx → v' = −sinx:

## sec(x) - Wolfram|Alpha

Compute answers using Wolfram's breakthrough technology & knowledgebase, relied on by millions of students & professionals. For math, science, nutrition, history ...

## Trigonometric Identities and Formulas

cscX = 1 / sinX sinX = 1 / cscX secX = 1 / cosX cosX = 1 / secX tanX = 1 / cotX cotX = 1 / tanX tanX = sinX / cosX cotX = cosX / sinX Pythagorean Identities sin 2 X + cos 2 X = 1 1 + tan 2 X = sec 2 X 1 + cot 2 X = csc 2 X Negative Angle Identities

## Sec, Cosec and Cot – Mathematics A-Level Revision

Secant, cosecant and cotangent, almost always written as sec, cosec and cot are trigonometric functions like sin, cos and tan. sec x = 1. cos x. cosec x = 1. sin x. cot x = 1 = cos x. tan x sin x. Note, sec x is not the same as cos -1 x (sometimes written as arccos x). Remember, you cannot divide by zero and so these definitions are only valid ...

## 18 Verifying Trigonometric Identities

= secx: Establishing Trigonometric Identities A trigonometric identity is a trigonometric equation that is valid for all values of the variable for which the expressions in the equation are de ned. How do you show that a trigonometric equation is not an identity? All you need to do is to show that the equation does not hold for just one value ...

## Solve for x sec(x)=0 | Mathway

Solve for x sec (x)=0. sec(x) = 0 sec ( x) = 0. The range of secant is y ≤ −1 y ≤ - 1 and y ≥ 1 y ≥ 1. Since 0 0 does not fall in this range, there is no solution. No solution.