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1. Two particles are simultaneously projected in horizontal direction with speed of 4m/s and 8m/s respectively in opposite directions from a tower of height 10 m. The displacement vectors of two particles a. never be perpendi ...
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1.An unlimited number of red, white, blue and green balls are given. The number of ways of selecting 10 balls is ? 2.The greatest possible number of points of intersection of 8 straight lines and 4 circles is? ...
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I learnt this Arihant Differential Calculus book. Please explain how ths has been derived or formulated. 1) If ax2 + bx + c > 0, for all x belonging to R a > 0 and D < 0 2) If ax2 + bx + c > 0, for all x belonging ...
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show that the equation secθ + cosecθ = c has two solutions between 0 and 2π if c2 < 8 and four solutions if c2 > 8. I've tried but didn't get the correct answer. ...
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Please explain this question, how the solution has been obtained? *Image* ...
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1) If sin x + sin y = 3(cos y - cos x), then find the value of sin3x + sin3y ? 2) If sin (x/2) + cos (x/2) = -1/2 , 3pie/2 < x < 2pie, then the value of sin2x? ...
