Question
Maths
July 10, 2020, 12:18 p.m.
Answer
𝙄𝙣 𝙖 𝙜𝙧𝙤𝙪𝙥 𝙤𝙛 65 𝙥𝙚𝙤𝙥𝙡𝙚 , 40 𝙡𝙞𝙠𝙚 𝙘𝙧𝙞𝙘𝙠𝙚𝙩 10 𝙡𝙞𝙠𝙚 𝙗𝙤𝙩𝙝 𝙘𝙧𝙞𝙘𝙠𝙚𝙩 & 𝙩𝙚𝙣𝙣𝙞𝙨? 𝙝𝙤𝙬 𝙢𝙖𝙣𝙮 𝙡𝙞𝙠𝙚 𝙩𝙚𝙣𝙞𝙨 𝙤𝙣𝙡𝙮 𝙣𝙤𝙩 𝙘𝙧𝙞𝙘𝙠𝙚𝙩
A certain freezing process require that the room temperature be lowered from 40°C at that rate of 5°C every hour. What will be the room temperature 10 hours after the process begins ?
i didn't understand the second step, cos y = cos(pi-pi/3). How did that (pi-pi/3) come?