Question

prove that sec(π/11) + sec{3π/11} +sec(5π/11)+sec(7π/11)+sec(9π/11) =6​

Answer 1

Answer:

moles are in 19.5 grams of platinumA particle has a displacement of 40m along OX in the first 5s and 30m perpendicular to OX in

the next 5s. The magnitude of average velocity of the particle during the time internal of 10s is

a) 6 ms–1 b) 7 ms–1 c) 8 ms–1 d) 5 ms–1 [