1st PUC Mathematics Series-6 December 3, 2020December 23, 2020wefru PUC Science 1st Year Mathematics Series-6 quiz 0 Created on December 02, 2020 By wefru 1st PUC Mathematics Series 6 TEST YOUR KNOWLEDGE OF SCIENCE 1 / 10 Q.51 If cos t = 0.8, then cos (2 t) = ? 0.28 0.3 10 20 2 / 10 Q.52 If tan x = 5, then tan (2 x) = ? 10 - 5 / 12 20 50 3 / 10 Q.53 If cos t = 3/4, and sin t < 0, then sin (3 t) = ? - 5 √7 / 16 12 56 78 4 / 10 Q.54 If cos t = 1/3 and 3π /2 < t < 2π in quadrant IV, then sin (4 t) = ? 56 √2 / 81 56 √2 56 √2 / 96 256 5 / 10 Q.55 If sin t = 1/5 and 0 < t < π/ 2, then cos (4 t) = ? 0.6928 20.1 30.12 5.1 6 / 10 Q.56 Find all angles θ such that -2π < θ < 2π and cos θ = √2 / 2 {-7 π / 4, - π / 4 , π / 4 , 7 π / 4} {- π / 4, - 3 π / 4 , π / 4 , 3 π / 4} {-5 π / 4, π / 4 , 3 π / 4} {π / 4 , π / 4 , 3 π / 4} 7 / 10 Q.57 What is the base case for the inequality 7n > n3, where n = 3? 652 > 189 42 < 132 343 > 27 42 <= 431 8 / 10 Q.58 In the principle of mathematical induction, which of the following steps is mandatory? induction hypothesis inductive reference induction set assumption minimal set representation 9 / 10 Q.59 For m = 1, 2, …, 4m+2 is a multiple of ________ 2 3 45 5 10 / 10 Q.60 For any integer m>=3, the series 2+4+6+…+(4m) can be equivalent to ________ m2+3 m+1 mm 3m2+4 Your score isThe average score is 0% LinkedIn Facebook Twitter VKontakte 0% Restart quiz