Posts tagged "math"
10 posts tagged with math.
Unit Circle Chart Explained: Sin, Cos and Tan at Every Angle
Every point on the unit circle is (cos θ, sin θ). The full chart with tangent, how to read any angle in three steps, and four patterns that make it easy to memorize.
0–60 in Under a Second: How Many G's Is That?
Turn any 0–60 time into g-force in three steps. The new Roadster's claimed 0.59 seconds is about 4.6 g, and here is why tires alone cannot get there.
What Is a Good GPA? Every GPA from 2.5 to 4.0, Explained
A 3.0 is good and a 3.5 is strong. How every GPA from 2.5 to 4.0 compares with the 3.11 national average, in high school and in college.
How to Convert a Decimal to a Fraction (and a Fraction to a Decimal)
Write the decimal over 10, 100 or 1,000, then simplify: 0.75 = 3/4. Repeating decimals, mixed numbers, simplifying and fractions back to decimals, step by step.
How to Calculate Your Grade: Points, Weighted Categories and the Final Exam
Divide points earned by points possible, or weight each category and add them up: 172 out of 200 is 86%. Plus the formula for the score you need on your final.
GPA Scale Chart: Letter Grades, Percentages, and What Your GPA Means
The full 4.0 scale with letter grades and percentage ranges, what common GPAs mean, and how to convert percentages correctly.
Weighted vs Unweighted vs Cumulative GPA: How Each Is Calculated
Unweighted GPA ignores difficulty, weighted GPA adds honors and AP points, cumulative GPA combines every term. Worked examples for each.
TDEE, BMR, and Macros Explained: The Math Behind Calorie Calculators
Every fitness app guesses your calorie target the same way: BMR formula, activity multiplier, macro split. We open the black box and show what each variable actually means.
How Mortgage Amortization Actually Works (With the Math)
Why is most of your early payment going to interest? We work through the amortization formula step by step, build the schedule from scratch, and show what extra payments really do.
Compound Interest, SIP, and 401(k): Three Ways Money Grows
Time in the market beats timing the market — but only if you understand the math. We compare lump-sum compounding, monthly SIP, and employer-matched 401(k) contributions.