- Cos π/18 + cos 3π/18 + cos 5π/18 + cos 7π/18 = 3/16 how we prove it?

Discover Questions

Electro chemistry questions, will award best answer asap? If medicine is needed, how does the medicine work? Which has increased membrane fluidity and why? A) 18:0 or 16:0 B) 18:1n-9 or 18:0 C) 18:1n-9 or 18:1n-3? What is the ratio of the numbers of days in January to the number of days in a non-leap year? Angela flips a fair coin 2018 times and Bert flips a fair coin 2017 times. What is the
probability that Angela had more tails than Bert?