what is cos 120 theta（関連順）

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For any angle `theta`, `costheta+cos(120^@+theta)+cos(120^@-theta)=........` (a) `-1` (b) `0` (c) `1

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cos cube theta plus cos cube 120+theta plus cos cube 240+theta equas to 3/4 cos three theta

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सिद्ध कीजिए की cos A + cos( 120 ^(@) +A) +cos ( 120^(@) -A) =0 | 11 | त्रिकोणमितीय फलन | MATHS...

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結果 : what is cos 120 theta