Ratio of Legs in 15, 75, 90 triangles - Mathematics Stack Exchange $\\text{What is the ratio of legs in a right triangle with angles of 15, 75, and 90?}$ I know the ratio of legs in a $30, 60, 90$ triangle, which is the lengths $1$, $\\sqrt{3}$, and $2$ respectively
Expected number of calls for bingo win Before I begin, I did a search through math stackexchange and came across two previous attempts to get people to solve probability problems involving bingo Neither produced a response So what m
Ring theory associates - Mathematics Stack Exchange Another example is afforded by Q[x] Q [x] $\mathbb{Q}[x]$, the ring of rational polynomials In this ring, polynomials are associates, if one is a rational multiple of the other-for example, 9x2 − 18x + 9 9 x 2 − 18 x + 9 $9{x}^{2}-18x+9$ and 2x2 − 4x + 2 2 x 2 − 4 x + 2 $2{x}^{2}-4x+2$ are associates
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