Verify the identity
cos^2x-sin^2x=1-2sin^2x...
Mathematics, 14.01.2020 08:31 dntestkly4581
Verify the identity
cos^2x-sin^2x=1-2sin^2x
Answers: 1
Mathematics, 21.06.2019 20:40, maloynegen7681
Answer pls man im trying to get out of summer school
Answers: 1
Mathematics, 22.06.2019 00:00, xXwolfieplayzXx
Aspacecraft can attain a stable orbit 300 kilometers above earth if it reaches a velocity of 7.7 kilometers per second. the formula for a rocket's maximum velocity v in kilometers per second is vequalsminus0.0098tplusc ln upper r, where t is the firing time in seconds, c is the velocity of the exhaust in kilometers per second, and r is the ratio of the mass of the rocket filled with fuel to the mass of the rocket without fuel. find the velocity of a spacecraft whose booster rocket has a mass ratio of 20, an exhaust velocity of 2.1 km/s, and a firing time of 15 s. can the spacecraft achieve a stable orbit 300 km above earth?
Answers: 3
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