User Star Bright - Mathematics Stack Exchange

Star Bright

2,338

reputation

California, USA
Member since February 25 2021
271 profile views
Last seen Mar 19 '23 at 00:15

Math is Fun

Algebra

A little trick for square

Inequality and absolute values

Taylor Expansion & inequality

Geometry

3x pairs of triangles

Symmetry for 30$^\circ $ angle

Numbers

***Squares, squares

***Trick of 999 x 999

Why is 5 special

Permutation and combination

Sample space of 3 cards

Probability

Probability of probability

Trigonometry

Derivatives of inverse trig functions make sense

**Law of sine makes it easy

*** New formula for sine values of 9 special angles?

Range of sine function