TRIGONOMETRI VIII . 2 sin A cos B , 2 cos A sin B

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TRIGONOMETRI VIII . 2 sin A cos B , 2 cos A sin B. Kelompok VIII Kelas XI IPA 1 ALIEN NURIL WARDANI(03) IQBAL SYARIFULLAH(18) NURIYA FADILAH(28) SEPTIN DWI AULIA N(33). Asal Rumus 2 sin A cos B. sin ( A + B ) = sin A cos B + cos A sin B - PowerPoint PPT Presentation

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TRIGONOMETRIVIII . 2 sin A cos B , 2 cos A sin BKelompok VIII

Kelas XI IPA 1

ALIEN NURIL WARDANI(03) IQBAL SYARIFULLAH(18) NURIYA FADILAH(28) SEPTIN DWI AULIA N(33)Asal Rumus 2 sin A cos B sin ( A + B ) = sin A cos B + cos A sin B sin ( A B ) = sin A cos B cos A sin B + sin ( A + B) + sin ( A B ) = 2 sin A cos B

RUMUS :sin ( A + B) + sin ( A B ) = 2 sin A cos B

Asal Rumus 2 cos A sin Bsin ( A + B ) = sin A cos B + cos A sin B sin ( A B ) = sin A cos B cos A sin B - sin ( A + B) - sin ( A B ) = 2 cos A sin B

RUMUS :sin ( A + B) - sin ( A B ) = 2 cos A sin B

Contoh Soal2 sin 60 cos 30 = ...........Jawab : sin ( 60 + 30 ) + sin ( 60 30 )= sin 90 + sin 30 = 1 + = 1.5

Contoh Soal2. Sin A cos B = ...............Jawab :

Latihan Soal 2 sin 52,5 cos 7,5 = ............

6 sin 105 cos 15 = ............

3. 5 cos 37,5 sin 7,5 = ............

Penyelesaian 2 sin 52,5 cos 7,5 = Jawab : sin ( 52,5 + 7,5 ) + sin ( 52,5 7,5 ) = sin 60 + sin 45 = 3 + 2Penyelesaian2. 6 sin 105 cos 15 =

== 3 ( sin 120 + sin 90 )= 3 ( 3 + 1 )= 3/2 3 + 3

Penyelesaian5 cos 37,5 sin 7,5 ==

= ( cos 45 sin 30 )= ( 2 + 3 )

= 5/4 2 + 5/4 3

TERIMA KASIHAtas Perhatian Teman teman dan Bapak Heru

WASSALAMUALAIKUM Wr, Wb.