🟣 Questão 138 - Caderno Azul | Função trigonométrica | MATEMÁTICA ENEM 2017

♟️Xequemat Start Course: https://xequematenem.com.br/vp1-yt-video Join the best Basic Math course for the ENEM exam now! Includes ENEM exam lessons and questions corrected in video and classified by difficulty level. As a bonus, get a corrected and analyzed simulation, 10 questions that will likely be on the exam, and 5 guessing techniques. Master Basic Math for the ENEM exam now! 💜 Sunlight rays are hitting the surface of a lake forming an angle x with its surface, as shown in the figure. Under certain conditions, it can be assumed that the luminous intensity of these rays on the surface of the lake is approximately given by Ix sinx () () =⋅ κ , where k is a constant, and assuming that x is between 0° and 90°. When x = 30°, the luminous intensity is reduced to what percentage of its maximum value? 👨‍🏫 Professor Caio Conrado 👨‍🏫 Professor Felipe Calaça Join the largest ENEM community and see everything you need to do well on the ENEM math exam! 👇🚀 ✔ Telegram Group: https://xequematenem.com.br/comunidad... ✔ Our website: https://xequematenem.com.br/ We have lots of free content for you to access on our website. Check it out! 📢 FOLLOW US ON SOCIAL MEDIA FOR MORE CONTENT ✩ Instagram:   / xequematenem   ✩ Facebook:   / xequematenem   ✩ TikTok:   / xequematenem   Xequemat ENEM is the channel for those who want to increase their score and achieve above 800 points in mathematics on the ENEM exam. We share tips, tricks, exercise solutions and much more, all for your approval. Professor Felipe Calaça will show you the content that appears on the exams and will teach you the best ways to solve the questions. Stay up-to-date on all the information, news and tips about the exams by subscribing to our channel and following us on social media! #enem2017 #matematicaEnem