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sin 2 4˚ + sin 2 6˚ + sin 2 8˚ + sin 2 10˚ + ……… + sin 2 86˚ = (sin2 4˚ + sin2 86˚)+(sin2 6˚ + sin2 84˚) + .…. + (sin2 44˚ + sin2 46˚) = (sin2 4˚ + cos2 4˚)+(sin2 6˚ + cos2 6˚) + .…. + (sin2 44˚ + co2 44˚) {As sin (90˚ - θ) = cos θ} = (1)+(1) + .…. upto 21 times { As sin2 θ + cos2 θ= 1} = 21 ` ` ` ` ` ` ` ` ` ` ` `
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INADVERTENT
...Directions: Four statements are given below labelled 1), 2), 3), 4) and 5). Among these, four statements are in logical order and form a coherent parag...
What is the tone of the passage according to you?
Which of the following is likely to co-exist?
Which of the following is most similar in meaning to the word 'chronic' as used in the passage?
