halo minta bantuan buat matematika wajib kelas 11 semester 1 dong
Jawab:
Penjelasan dengan langkah-langkah:
[tex]\cos x. \tan x = \sin x\\ \\ \cos x.\frac{\sin x}{\cos x} = \sin x\\ \\\sin x = \sin x \ (terbukti)[/tex]
[tex]\frac{\cos^2A}{1-\sin A}=1+\sin A\\ \\ \frac{1-\sin^2 A}{1-\sin A}=1+\sin A\\ \\\frac{(1+\sin A)(1-\sin A)}{1-\sin A}=1+\sin A \\ \\1+\sin A = 1+\sin A[/tex]
2.a siku-siku di L,
LM² = KM²-KL²
LM² = 13² - 5² = 169 - 25 = 144
LM = 12
[tex]\sin K = \frac{de}{mi} = \frac{12}{13}\\ \\\cos K = \frac{sa}{mi} = \frac{5}{13}\\ \\ \tan K = \frac{de}{sa} = \frac{12}{5}[/tex]
[answer.2.content]
