Question

Which of the following ratios is equivalent to 1/cos?

Answer 1

The ratio equivalent to 1/cos is sin.

Step-by-step explanation:

The ratio equivalent to 1/cos is sin.

To understand this, we need to recall the trigonometric identity: sin^2 A + cos^2 A = 1.

Dividing both sides of the equation by cos^2 A, we get sin^2 A / cos^2 A + 1 = sec^2 A. Taking the square root of both sides, we get sin A / cos A + 1 / cos A = 1 / cos A. Simplifying the equation, we have sin A / cos A = 1 / cos A.

Answer 2

Secant

Remember it by linking the third letter:
SeCant = 1/Cos
CoSecant = 1/Sin
CoTangent = 1/Tan