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Projection Formula

If (1 - cos A...

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If (1 - cos A) /(1 + cos A) =(2 - √3) /(2 + √3) Where 0°

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θ_{1}, θ_{2}, θ_{3}

cos 2 θ_{1} + cos 2 θ_{2} + cos 2 θ_{3} + 1 = 0

The value of $c o s^{- 1} x + c o s^{- 1} (\frac{x}{2} + \frac{1}{2} \sqrt{3 - 3 x^{2}})$ where $(\frac{1}{2} \leq x \leq 1)$ is equal to

0 < {cos}^{- 1} x < 1

1 + sin ({cos}^{- 1} x) + {sin}^{2} ({cos}^{- 1} x) + {sin}^{3} ({cos}^{- 1} x) + . . . . . . . . . \infty = 2,

2 \sqrt{3} x .

A^{- 1} = ⎡ ⎢ ⎣ \begin{matrix} s i n^{2} α & 0 & 0 0 & s i n^{2} β & 0 0 & 0 & s i n^{2} γ \end{matrix} ⎤ ⎥ ⎦

B^{- 1} = ⎡ ⎢ ⎣ \begin{matrix} c o s^{2} α & 0 & 0 0 & c o s^{2} β & 0 0 & 0 & c o s^{2} γ \end{matrix} ⎤ ⎥ ⎦

α, β

γ

C = (A^{- 5} + B^{- 5}) + 5 A^{- 1} B^{- 1} (A^{- 3} + B^{- 3}) + 10 A^{- 2} B^{- 2} (A^{- 1} + B^{- 1})

c o s e c ({tan}^{- 1} (cos ({cot}^{- 1} (sec ({sin}^{- 1} a))))) = \sqrt{3 - a^{2}}

a \in [0, 1]

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