How Exactly Did They Factor The Trig Equation Reddit Precalculus R Askmath

How Exactly Did They Factor The Given Equation? : R/askmath

How Exactly Did They Factor The Given Equation? : R/askmath We will solve the trig equation sin^2 (x) 4sin (x) 3=0 by factoring. this precalculus question is from reddit r/askmath https://www.reddit.com/r/askmath/s/2zvz. Replace sin 2 (x) with u 2 and sin (x) with u in the original equation. hopefully at this point, it’s clear how to factor this quadratic. the equation is sin 2 x 4sinx 3. let’s set a = sinx. now the equation becomes a 2 4a 3. does that look more familiar and like something you can deal with? the same you normally factor a quadratic.

Precalculus Trig : R/askmath

Precalculus Trig : R/askmath Verifying trig formulas is all about proving that the two sides of the equation equal each other. typically, i tell students to draw a straight line down from the equal sign because we don't want to cross over it. Trig functions have always been worked out by computer, but computers used to be people, mostly women, whose job it was to compute formulas. some of those formulas might be logs or integrals, or in this case trig functions. I feel like this tip is the holy grail for trigonometry, specially when going through more advanced courses like integral calculus. every useful trig formula stems from, or can be reduced to, these three identities (or at least that’s what my experience tells me). I struggled a lot because i had a poor understanding of trig, even when as simple as not understanding the solution to an integration because i didn't know how to properly rewrite trig identities.

Trig Equation Issue : R/Precalculus

Trig Equation Issue : R/Precalculus I feel like this tip is the holy grail for trigonometry, specially when going through more advanced courses like integral calculus. every useful trig formula stems from, or can be reduced to, these three identities (or at least that’s what my experience tells me). I struggled a lot because i had a poor understanding of trig, even when as simple as not understanding the solution to an integration because i didn't know how to properly rewrite trig identities. I’m in precalculus and i am utterly and completely lost in trying to understand trigonometric identities. i’m frustrated and exhausted trying to understand them and as with most things in the educational system the textbook does little to nothing to help that. In terms of the standard math classes they make most people take for anything remotely stem related, trig was one of the easiest and pre calc was probably the worst up until calc 2. It’s supposed to be sin (x) = 0. with this method you move everything to one side and factor it out: any integer value of k is a solution. what the hell is going on in that picture? i cannot follow his work at all? why does he say sin (x) = 1? and then solves it wrong?. R/precalculus: a subreddit that helps people with their math problems and discusses precalc related topics.

How exactly did they factor the trig equation? Reddit precalculus r/askmath