Page 107 - Bangladesh_classwiz_BOOK2018_rev_Neat

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Dc‡ii w¯Œb Abyhvqx Gi gvb −45° wKš cÖ`Ë e¨ewa 2 . myZivs cÖvß gv‡bi mv‡_ Gi ch©vq 2 ev
360° †hvM Ki‡j Gi gvb cvIqv hvq, 360° + (−45) = 315°.
jÿYxq†h, Gi ch©vq 360°, Gi ch©vq 360°, Gi ch©vq 360°.
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Solve e¨envi K‡i Gi gvb Av‡iv `ªæZ †ei Kiv hvq| GRb¨ cÖ_‡g = −1 K¨vjKz‡jU‡i UvBc Ki‡Z

n‡e| Gici qre¨envi Ki‡j Gi gvb PvB‡e| Gi gvb wn‡m‡e cÖ`Ë e¨ewa A_©vr †_‡K 2 Gi

wfZ‡i ‡h‡Kv‡bv gvb cÖ‡ek Kwi‡q = Pvc‡j mivmwi Gi gvb wb‡Pi w¯Œ‡bi g‡Zv cvIqv hv‡e|

9.7 gv‡bi ZvwjKv e¨envi K‡i †jLwPÎ A¼b

gv‡bi ZvwjKv e¨envi K‡i †h‡Kv‡bv w·KvYwgwZK dvsk‡bi †jLwPÎ Lye mn‡RB A¼b Kiv hvq| GRb¨ cÖ_‡g
w9 e¨envi K‡i Table mode G cÖ‡ek Ki‡Z n‡e| GLv‡b PjK wn‡m‡e e¨envi Kiv fv‡jv|
D`vniY¯^iƒc, Gi †jLwPÎ A¼b Kivi Rb¨ Table mode -G cÖ‡ek Kivi ci ( ) Gi ¯’‡j
UvBc Ki‡Z n‡e| Gici = evUb †P‡c , I gvb wn‡m‡e 0, 270 I 10 cÖ‡ek Kwi‡q cybivq

= evUb Pvc‡j wb‡Pi g‡Zv gv‡bi ZvwjKv cvIqv hv‡e|

gv‡bi ZvwjKvi w`‡K jÿ¨ Ki‡j †`Lv hv‡e †h, 90° Gi gvb AmsÁvwqZ nIqvq K¨vjKz‡jU‡i Error cÖ`k©b
Ki‡Q| Dc‡ii gv‡bi ZvwjKv n‡Z cÖvß gvb¸‡jv QK KvM‡R emv‡j Gi †jLwPÎ cvIqv hv‡e| = 90°

†Z Gi ‡Kv‡bv gvb bv _vKvq †LjwPÎwU wew”Qbœ Ges = 90° †Z GKwU AmxgZU †iLv Av‡Q hv A‡ÿi
mgvšÍivj| QR ‡Kv‡Wi gva¨‡g cÖvß †jLwPÎwU wb‡P †`Lv‡bv n‡jv|

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