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Proof without words: The Cosine of difference
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H. ÜNAL, "Proof without words: The Cosine of difference," Mathematics and Computers Education , vol.44, no.2, 2010

ÜNAL, H. 2010. Proof without words: The Cosine of difference. Mathematics and Computers Education , vol.44, no.2 .

ÜNAL, H., (2010). Proof without words: The Cosine of difference. Mathematics and Computers Education , vol.44, no.2.

ÜNAL, Hasan. "Proof without words: The Cosine of difference," Mathematics and Computers Education , vol.44, no.2, 2010

ÜNAL, Hasan. "Proof without words: The Cosine of difference." Mathematics and Computers Education , vol.44, no.2, 2010

ÜNAL, H. (2010) . "Proof without words: The Cosine of difference." Mathematics and Computers Education , vol.44, no.2.

@article{article, author={Hasan ÜNAL}, title={Proof without words: The Cosine of difference}, journal={Mathematics and Computers Education}, year=2010}