" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Verified answer
Trigonometrimenentukan panjang sisi segitiga
Aturan yang diperlukan
• aturan sinus pada segitiga
• aturan Pythagoras
• nilai sudut istimewa
• aljabar sudut
Penjelasan lebih lanjut diberikan dalam bentuk gambar.
Semoga jelas dan membantu
Besar sudut ABD
= 180-45
=135°
Besar sudut ADB
= 180-30-135
= 15°
BD = √1^2+1^2
.... =√2
BD/sin 30° = AB/sin 15°
√2/1/2 = AB/sin 15°
AB = √2/1/2 . sin 15°
= 2√2.sin 15° ----------> pembuktian