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Factor Formulae - Derivation

$ \displaystyle \begin{array}{l}\sin (\alpha +\beta )=\sin \alpha \cos \beta +\cos \alpha \sin \be…

Half-Angle Formulae - Derivation

 cos2α=12sin2α ဆိုတာ သိခဲ့ပါၿပီ။ $ \displaystyle 2\alp…

Double Angle Formulae - Derivation

sin(α+β)=sinαcosβ+cosαsinβ ဆိုတာ သိခဲ့…

Sum and Difference Formulae - Derivation

\displaystyle ΔABC, ΔACD နဲ႔ \displaystyle ΔCDF တို႔ဟာ ေထာင့္မွန္ႀတိဂံမ်ား ျဖစ္ၾကပါတယ္။ $ …

Exercise (11.3) No(4, 5) - Solution

4. If \displaystyle α + β + γ = 180°, prove that $ \displaystyle \text{(a)}\ \ \sin (\alpha +\be…

Exercise (11.3) No (2) Solution

Find the value of θ, 0° ≤ θ ≤ 360° for the following equations. Do not use table. (a) $ \displaysty…

Exercise (11.3) No (3) Solution

Solve the following equations for 0° ≤ x ≤ 360°. $ \displaystyle {(\text{a})\ 2\sin x\cos x=\sin x…

Trigonometric Ratios of Special Angles

အနား တစ္ဖက္ \displaystyle x unit ရွိတဲ့ စတုရနး္ \displaystyle ABCD ဆိုပါစို႔။ စတုရန္း ျဖစ္ေသာ…

Basic Acute Angle

❀       The acute angle between the terminal side and the X - axis is called the basic acute angle.…

Trigonometric Ratios of ( – θ)

\displaystyle \ \ \ \text{In}\ \vartriangle PON, \displaystyle \ \ \ \sin \theta =y $ \displa…

Trigonometric Ratios of (270° + θ)

\displaystyle \ \ \ \text{In}\ \vartriangle PON, \displaystyle \ \ \ \sin \theta =y $ \displ…

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