{"type":"rich","version":"1.0","title":"三、三角函數","provider_name":"Coggle","provider_url":"https://coggle.it","thumbnail_url":"https://static.coggle.it/diagram/X5Pz4oWuK_WdjzFs/thumbnail","width":1920,"height":1200,"html":"<iframe width=\"1920\" height=\"1200\" src=\"https://embed.coggle.it/diagram/5f93f3e285ae2bf59d8f316c\" frameborder=\"0\" allowfullscreen></iframe>"}