June | 2018 | Sarah's Blog

Sarah's Blog

Week 18 – Top 5 things I have learned in Precalc 11

I’ve learned so many new things in precalculus 11. Here are my top 5 things that I have learned this semester: Series and sequences: In an arithmetic sequence, the difference between the terms is constant. The value is called the common difference. The general equation for is An arithmetic series is the sum of…

Week 17 – Sine Law

The sine law can be used for any triangle to determine the length of a side or to find an angle. The formula can be used in this form, or this form, When the variable is in the numerator, it is easier to solve for it. To find the side length, use the first formula….

Week 16 – Applications of Rational Expressions

Rational expressions can be used to solve real-world problems. To solve the problem understand what is being asked, then use a variable for the missing number, write an equation using the given information, and then solve it. Here is a problem involving proportions: How much bleach should be added to 47 L of water to…