Page 134 - Bangladesh_classwiz_BOOK2018_rev_Neat

mgvavb- mgm¨vwU‡Z cv_iwUi mi‡Yi gvb †`Iqv n‡q‡Q| G‡K mg‡qi mv‡c‡ÿ AšÍixiKY Ki‡j †eM cvIqv hv‡e|
qy Y †P‡c cÖ_‡g K¨vjKz‡jU‡i AšÍiK Acv‡iUi cÖ‡ek Kwi‡q $evUb †P‡c = 10 cÖ‡ek

Kiv‡Z n‡e| Gici =Pvc‡j 10 c‡ii †eM cvIqv hv‡e|

(Key log- qy98[p4.9[d$10=)

)
4. ∫ 1 2 (tan −1 2 2 .
0 1+ 4
mgvavb- cÖ_‡g Calulate mode G wM‡q Angle unit, radian mode G wb‡Z n‡e| Gici y†P‡c
†hvMRxKiY Acv‡iUi K¨vjKz‡jU‡i cÖ‡ek Kiv‡Z n‡e| AZtci dvskbwU cÖ‡ek Kwi‡q $e¨envi K‡i
‡hvMRxKi‡Yi D”Pmxgv I wb¤œmxgv cÖ‡ek Kiv‡Z n‡e| GLb = evUb Pvc‡j djvdj cvIqv hv‡e|

(Key log- qw22ya2[(ql[d))dR1+[
^4$$$0$1=)

2
5. + = 16 e„Ë Øviv Ave× †ÿ‡Îi ‡ÿÎdj wbY©q Ki‡Z n‡e|
2
2
mgvavb- e„ËwUi e¨vmva √16 = 4| myZivs 0 ‡_‡K 4 mxgvi g‡a¨ = √16 − Gi †hvMRxKiY dj‡K 4
©
Øviv ¸Y Ki‡j e„ËwU Øviv Ave× †ÿ‡Îi †ÿÎdj cvIqv hv‡e| GB Rb¨ wb‡Pi wP‡Îi g‡Zv K¨vjKz‡jU‡ii gva¨‡g
gvb †ei Ki‡Z n‡e| jÿYxq†h, K¨vjKz‡jU‡ii Angle unit, Radian mode G _vK‡Z n‡e|

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