Trigonometry (Practice Problems) αူαိα်αα်း Saturday, March 30, 2019 1. Given that $ \displaystyle \sin 16{}^\circ =p,$ determine the following in terms of $ \di…
Trigonometric Identities αူαိα်αα်း Friday, December 28, 2018 1. Prove that in any triangle $ \displaystyle ABC,$ (i) $ \displaystyle \sin (A+B) …
Problem Study : Trigonometric Identity αူαိα်αα်း Saturday, December 01, 2018 1. Prove that $ \displaystyle \frac{{\tan (A+B)}}{{\cot (A-B)}}=\frac{{{{{\sin }}^{2}}A…
Trigonometric Function and Solving Trigonometric Equation αူαိα်αα်း Monday, November 19, 2018 Let $ \displaystyle f(x)=\frac{{\cos x}}{{1+\sin x}}+\frac{{1+\sin x}}{{\cos x}}.$ (a) Prove that $…
Problem Study (Trigonometric Identity) αူαိα်αα်း Sunday, November 18, 2018 Prove that $ \displaystyle 4\sin (x+30{}^\circ )\sin (x-30{}^\circ )=3-4{{\cos }^{2}}x.$ $ \display…
Problem Study (Trigonometric Identity) αူαိα်αα်း Friday, June 03, 2016 Given that , Prove that . Solution …
Half-Angle Formulae - Derivation αူαိα်αα်း Thursday, March 15, 2012 $ \displaystyle \ \cos 2\alpha =1-2{{\sin }^{2}}\alpha $ αိုαာ αိαဲ့αါαΏαီ။ $ \displaystyle 2\alp…
Double Angle Formulae - Derivation αူαိα်αα်း Wednesday, March 14, 2012 $ \displaystyle \sin (\alpha +\beta )=\sin \alpha \cos \beta +\cos \alpha \sin \beta $ αိုαာ αိαဲ့…
