# Tag: sousa

## Ex: Solve sec(x)=a Without a Calculator

[Voiceover]- In this lesson we’ll solve the equation secant theta equals two divided by square root of three and secant theta equals negative square root of two on the given interval, without a calculator. So, because we’ll be solving these equations without a calculator, we’ll cover how to solve them using a unit circle as […]

## Fraction, Decimal, Percent Conversions (Not Basic, No Calculator)

We are asked to complete the following table, in the first row we want to convert a fraction to a decimal and percent. In the second row we want to convert the decimal to a fraction and percent. In the third row we want to convert the percent to a fraction and decimal. While there […]

## Quadratic Inequality Application: Solve on Graphing Calculator

The function f of x models the annual consumption of beans in tons in the US from 2000 to 2017, where x represents the number of years since 2000. For part A, we’re asked to use a graphing method to determine the years in which the consumption of beans was greater than 21,360 tons per […]

## Ex: Solve cot(x)=a Without a Calculator

We want to solve the equation cotangent theta equals square root of three and the equation cotangent theta equals a negative square root of three divided by a three on the interval from zero to two pi radians. We want to solve these equations without a calculator which means we’ll be using reference triangles in […]

## Square a Two-Digit Number Ending in 5 without Using a Calculator

Welcome to a video that will show how to square a two digit number that ends in five quickly and without the use of a calculator. The result of squaring any two-digit number that ends with five starts with the number you get by multiplying the first digit of the number you are squaring with […]

## Ex: Evaluate Common Logarithms on the Calculator

– WE WANT TO EVALUATE EACH LOGARITHM ON A CALCULATOR. THEN WRITE A EXPONENTIAL EQUATION TO SHOW THE MEANING OF THE VALUE. NOTICE IN BOTH OF THESE LOGARITHMS THE BASE IS NOT GIVEN THEREFORE WE KNOW IT’S A COMMON LOGARITHM OR LOG BASE 10. MOST CALCULATORS ONLY CONTAIN TWO LOG BUTTONS, LOG FOR COMMON LOG […]

## Ex: Evaluate Natural Logarithms on the Calculator

– WE WANT TO EVALUATE THE GIVEN LOGARITHMS, AND THEN WRITE AN EXPONENTIAL EQUATION TO SHOW THE MEANING OF THE VALUE. NOTICE BOTH OF THESE ARE NATURAL LOGARITHMS, WHICH MEANS BOTH OF THESE ARE LOG BASE E. AND JUST TO REMIND US OF THIS, LET’S GO AHEAD AND PUT THE LITTLE E HERE AND HERE. […]

## Determine the Value of a Definite Integral on the Graphing Calculator

– WELCOME TO A VIDEO ON HOW TO DETERMINE THE VALUE OF A DEFINITE INTEGRAL ON THE GRAPHING CALCULATOR. LET’S GO AHEAD AND TAKE A LOOK AT AN EXAMPLE. THE FIRST THING WE SHOULD RECOGNIZE HERE IS THAT THE GRAPHING CALCULATOR WILL NOT FIND AN ANTI-DERIVATIVE OR AN INDEFINITE INTEGRAL BUT IT WILL FIND THE […]

## Ex: Solve a Trigonometric Equation Using a Graphing Calculator

We want to solve a trig equation graphically using a graphic calculator. We want to give the first two positive radian solutions rounded to four decimal places. So to solve this graphically, we’ll enter the left side of the equation, in y one, we’ll enter the right side of the equation, in y two. And […]