Question

4.

What is the error in this equation for a trigonometric ratio? Explain the error in full sentences and give a corrected ratio. (5 points)

Answer 1

`\cos\ A = (2)/(4.5)`

Explanation:

Given

`sin\ A = (2)/(4.5)`

See attachment

Required

Explain and correct the error

The error in the equation is that: the formula of cosine of angle A is used to calculate the sine of angle A.

The ratio can be corrected as by using:

`\cos\ A = (Adjacent)/(Hypotenuse)`

`\cos\ A = (AC)/(AB)`

`\cos\ A = (2)/(4.5)`