## Math: polar coordinates

The tutor introduces another way of stating a point location. Back in my Oct 29 post I described angles in standard position and reference angles with a couple of illustrations. The idea relates to polar coordinates. With (x,y) coordinates, which …

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## Spreadsheets: trig functions w/ degrees in LibreOffice Calc

The tutor provides a brief hint about using trig functions of angles in degrees on LibreOffice Calc. A person who doesn’t use a spreadsheet very often, probably needs it to work quickly and reliably the rare time they do use …

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## English: Reading: E. F. Benson: “The Room in the Tower”

The tutor shares about a late read. Two days prior, I’d never heard of E.F. Benson. However, the horror anthology I mention in my post of November 10 includes his “The Room in the Tower.” The title attracted me. Benson …

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## Calculus: the derivative of root x

The tutor offers a quick hint about a derivative that can be tricky. Example: find the derivative of √x Solution: Rewrite √x as x^0.5 Take the derivative using the power rule: (x^0.5)’ = 0.5x^(-0.5) You may want to rewrite, perhaps …

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## English: Horror genre: horror short fiction

The tutor fondly returns to a topic he explored a lifetime ago. I graduated from UVic in ’95; my first son was born in July ’02. During the intervening years I had lots of time. Pursuing computer programming and reading …

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## Lifestyle: yard work

The tutor shares observations from an afternoon’s yard chores. In my experience, yard work is similar to exercise or even dishes. While one can hardly ever “finish” it, one can advance it along so that next time, it’s not crushing. …

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## Calculator usage: deg to rad, rad to deg conversion on the Casio fx-260solar

The tutor shares another convenient feature of the Casio fx-260solar. In high school math, you might have to convert between degrees and rads. It’s easy with the Casio fx-260solar; here’s how: Example 1 Convert 60 degrees to rads. Solution: Let’s …

## Lifestyle: an owl encounter

The tutor shares a brief encounter with an owl from last night. Around 11pm, my wife and I were in the kitchen preparing lunches for today. Suddenly, we heard some loud, squeaky wails from what seemed like the backyard. As …

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