div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imageimg data-url=documentteachingbd-5a-a-b-sinb-sina-b-cosa-b-tana-b-cota-cot-a-tana-tanhtmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: Teachingbd 5A A B sinB sinA — B cosA + B tanA + B cota + cotß a tana tanß b tanœtanP + P cota + cotß = a tan + tan tan a tan p E — + I + cos2e + sin26 @ sine @ sece loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader038fdocumentsnlreader038viewer20221029205abe69b97f8b9aa15e8ccf8fhtml5thumbnails1jpg width=140 height=200 divphttp:teachingbdcomp pTeachp pingbdcop pmp div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadiv div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadivdivdiv class=trans-pagebutton class=gotoPage data-page=2Page 2button div class=trans-imageimg data-url=documentteachingbd-5a-a-b-sinb-sina-b-cosa-b-tana-b-cota-cot-a-tana-tanhtmlpage=2 data-page=2 class=trans-thumb lazyload alt=Page 2: Teachingbd 5A A B sinB sinA — B cosA + B tanA + B cota + cotß a tana tanß b tanœtanP + P cota + cotß = a tan + tan tan a tan p E — + I + cos2e + sin26 @ sine @ sece loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader038fdocumentsnlreader038viewer20221029205abe69b97f8b9aa15e8ccf8fhtml5thumbnails2jpg width=140 height=200 divphttp:teachingbdcomp pTeachp pingbdcop pmp div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadiv div class=annotationa href=http:teachingbdcom rel=ugc nofollow target=_blankhttp:teachingbdcomadivdivdiv class=trans-pagebutton class=gotoPage data-page=3Page 3button div class=trans-imageimg data-url=documentteachingbd-5a-a-b-sinb-sina-b-cosa-b-tana-b-cota-cot-a-tana-tanhtmlpage=3...