exam
Maths Puzzle
Numerical Ability
An airplane flew for 6 hrs w/ a 22-km/h tail wind.THe return flight against the same wind took 8 hrs.Find the speed of the plane in still air.
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exam Other Question
three times the measure of the supplement of an angle is equal to eight times the measure of its complement. find the angle, its complement, and its supplement.
Prove that:
1 + cos A/ 1 - cos A = tanČA/(secA - 1)Č