User:Feb30th1712

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ja-1 この利用者は少しだけ日本語を話すことができます。
zh 這個用戶的母語是中文。
这个用户的母语是中文。
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Currently reading 計算機概論第六版(ISBN 986-421-565-5).

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[edit] Math

The unit circle
The unit circle

\frac {d}{d \theta} \sin \theta = \cos \theta

\frac {d}{d \theta} \cos \theta = - \sin \theta

\frac {d}{d \theta} \tan \theta = \sec^2 \theta

\frac {d}{d \theta} \cot \theta = - \csc^2 \theta

\frac {d}{d \theta} \sec \theta = \sec \theta \tan \theta

\frac {d}{d \theta} \csc \theta = - \csc \theta \cot \theta

cos2θ = cos2θ − sin2θ = 2cos2θ − 1 = 1 − 2sin2θ

\sin^2 \theta = \frac{1 - \cos 2 \theta}{2}

\cos^2 \theta = \frac{1 + \cos 2 \theta}{2}

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P4P800

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asm-1 This user is a beginning assembly language programmer.
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