# Tagged Questions

Linear, exponential, logarithmic, polynomial, rational, and trigonometric functions, conic sections, binomial, surds, graphs and transformations of graphs, equation- and system-solving, and other symbolic-manipulation topics.

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### How to solve $\sin^3 x=\sin x\,$?

$\sin^3 x=\sin x$ I have absolutely no idea what to do. I've tried graphing, and I have a little better of an understanding, but I am at a loss.
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### SAT arithmetic and pre-calculus

1.for the annual school fundraiser, santiago has p pledges each for c cents per lap that he jogs. If his school track has 4 laps per mile and santiago raises a total of d dollars, how many miles did ...
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### Solving trigonometric equations to the fourth power.

$$\sin^4(x)-\sin^2(x)=0$$ My work: Let $t=\sin^2(x)$ Rewrite the original equation as: $t^2-t$ Factor: $t(t-1)$ $t=1$, $t=0$ What do I do from here?
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### system of binomial factors

A system of any number of binomial factors each the sum of two squares being supposed multiplied together , show , by any method, that their product is the sum of two squares.
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### algebraic representation of a line in 3d

Is an algebraic representation of a line in 3d possible, or there can be only a parametric one?
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### Map (-1500, 1500) on scale of (0, 100).

I've a minimum value = -1500 & maximum value 1500. Now, I've a scale of 0 to 100. How can I map my min & max value to this scale. That is, if I select 99 on scale, it should return 99% of ...
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### the volume of pyramid value

when calculating the volume of pyramid using a determinnat, is it ok to take the determinanat in absloute value so that every negative result would be converted to positive volume number?
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### If $\cos 25^\circ + \sin 25^\circ = k,$ then what is $\cos 20^\circ$?

Question: If $$\cos 25^\circ + \sin 25^\circ = k,$$ then what is $\cos 20^\circ$? What I did: I tried to square both sides, and obtained that $\sin 50 = k^2 -1$, however, this didn't get me ...
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### $(18B^2/(A^2-9B^2)) - (A/A+3B) + 2$

Simplify: $$\frac{18B²}{A²-9B²} - \frac{A}{A+3B} + 2$$ If the notation doesn't work like I wrote it above it's; Simplify: 18B^2/A^2-9B^2 - A/A+3B + 2. I made denominator common by expanding A²-9B²...
### $2^{1/4} \times 4^{1/8} \times 8^{1/16} \times 16^{1/32} \times \ldots\to2$
$2^{1/4} \times 4^{1/8} \times 8^{1/16} \times 16^{1/32} \times \ldots\to2$ How can I explain this to a school student who doesn't know what a limit is?