Cos 7 x minus cos 5 X upon sin 7x minus sin 5 x is equal to cot X
Question
1. The system of linear equations ax+ by= 0, cx + dy = 0 has a non-trival solution if a. ad – bc = 0 b. ad – bc < 0 c. ad –bc = 0. d. ac + bd = 0
Maths
Dec. 11, 2019, 8:21 p.m.
Answer
On selling a computer for Rs24480 a dealer loses 4percent for how much should he sell it to gain 4 percent?
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