SOAL SUDUT ISTIMEWA TRIGONOMETRI
(MATEMATIKA KELAS X SMA/ MA)
Oleh : Suryadi
Direction of Education Apenso Indonesia
SOAL:
{ 2 (cos 60)² + 4 (sec 30)² - (tan 45)² } / { (sin 30)² + (cos 30)² } =.............
JAWAB:
{ 2 (cos 60)² + 4 (sec 30)² - (tan 45)² } / { (sin 30)² + (cos 30)² } =
{ 2 (1/2)² + 4 (2/3 √3)² - 1² } / { (1/2)² + (1/2 √3)² } =
{ 2. (1/4) + 4.(2/3)²(3) – 1 } / { 1/4 + (1/2)²(3)} =
( 1/2 + 4 x 4/9 x 3 – 1 ) / ( 1/4 + 1/4 x 3 ) =
( 1/2 + 16/3 – 1 ) / ( 1/4 + 3/4 ) =
{ 3/6 + 32/6 – 6/6 ) / ( 4/4 ) = 29/6 = 4 5/6
Hubungi : WA 0823 3846 4171
🌸Selamat Belajar & Good Luck!🌸
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