Trigonometry (Practice Problems)
1. Given that $ \displaystyle \sin 16{}^\circ =p,$ determine the following in terms of $ \di…
1. Given that $ \displaystyle \sin 16{}^\circ =p,$ determine the following in terms of $ \di…
1. Prove that in any triangle $ \displaystyle ABC,$ (i) $ \displaystyle \sin (A+B) …
1. Prove that $ \displaystyle \frac{{\tan (A+B)}}{{\cot (A-B)}}=\frac{{{{{\sin }}^{2}}A…
Let $ \displaystyle f(x)=\frac{{\cos x}}{{1+\sin x}}+\frac{{1+\sin x}}{{\cos x}}.$ (a) Prove that $…
Prove that $ \displaystyle 4\sin (x+30{}^\circ )\sin (x-30{}^\circ )=3-4{{\cos }^{2}}x.$ $ \display…
$ \displaystyle \ \cos 2\alpha =1-2{{\sin }^{2}}\alpha $ ဆိုတာ သိခဲ့ပါၿပီ။ $ \displaystyle 2\alp…
$ \displaystyle \sin (\alpha +\beta )=\sin \alpha \cos \beta +\cos \alpha \sin \beta $ ဆိုတာ သိခဲ့…