div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imageimg data-url=document-cosa-cos3a-cos5a-cos7a-e-cos3e-2cos5e-cos7e-14-prove-that-cos2htmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: cosA + cos3A + cos5A + cos7A + e cos3e + 2cos5e + cos7e 14 Prove that cos2Ð cose + 2cos30 + cos5e c s-9Câ9 8 c J 9 9 Ces a 9 — S 29 SR 9 caao — sin2etan3Ø 3 tan5Ð loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader030fdocumentoscomreader030viewer20220403035e9136748bc3a102d27c27b4html5thumbnails1jpg width=140 height=200 divdivdiv class=trans-pagebutton class=gotoPage data-page=2Page 2button div class=trans-imageimg data-url=document-cosa-cos3a-cos5a-cos7a-e-cos3e-2cos5e-cos7e-14-prove-that-cos2htmlpage=2 data-page=2 class=trans-thumb lazyload alt=Page 2: cosA + cos3A + cos5A + cos7A + e cos3e + 2cos5e + cos7e 14 Prove that cos2Ð cose + 2cos30 + cos5e c s-9Câ9 8 c J 9 9 Ces a 9 — S 29 SR 9 caao — sin2etan3Ø 3 tan5Ð loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader030fdocumentoscomreader030viewer20220403035e9136748bc3a102d27c27b4html5thumbnails2jpg width=140 height=200 divdivdiv class=trans-pagebutton class=gotoPage data-page=3Page 3button div class=trans-imageimg data-url=document-cosa-cos3a-cos5a-cos7a-e-cos3e-2cos5e-cos7e-14-prove-that-cos2htmlpage=3 data-page=3 class=trans-thumb lazyload alt=Page 3: cosA + cos3A + cos5A + cos7A + e cos3e + 2cos5e + cos7e 14 Prove that cos2Ð cose + 2cos30 + cos5e c s-9Câ9 8 c J 9 9 Ces a 9 — S 29 SR 9 caao — sin2etan3Ø 3 tan5Ð loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader030fdocumentoscomreader030viewer20220403035e9136748bc3a102d27c27b4html5thumbnails3jpg width=140 height=200...