Hi All,
Could somebody please explain (step by step) how to find the exact value of sinx= -1/√2 when -pi < θ ≤ pi? Been trying to google but the only example is between 0 < θ ≤ 2pi..
Many thanks
Hi All,
Could somebody please explain (step by step) how to find the exact value of sinx= -1/√2 when -pi < θ ≤ pi? Been trying to google but the only example is between 0 < θ ≤ 2pi..
Many thanks
$\displaystyle \text{Disregard the minus sign temporarily and put} \\ \\ sin^{-1} \frac{1}{\sqrt{2}} \\ \\ \text{in your calculator, this will give you the reference angle of 45 or} \ \frac{\pi}{4} \\ \\ \text{The sine is negative in 3rd and 4th quadrants so your 2 solutions will be} \\ \\ - \pi \ + \ \frac{\pi}{4} \ = \ - \frac{3 \pi}{4} \\ \\ and \\ \\ - \frac{\pi}{4} $
Anyone stupid enough to fall for you scam deserves the outcome.
I can find no entry for you at MathGenealogy Project
So what equips you to tutor?
What equips me to tutor? First of all, equips is not english to you must be from another country. I though am from the United States. Lets see... Math major, expert in math, actuary science major, mba, etc etc.