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Ex 8.4
Ex 8.4, 2 Important
Ex 8.4, 3 (i) Important
Ex 8.4, 3 (ii)
Ex 8.4, 4 (i) [MCQ]
Ex 8.4, 4 (ii) [MCQ] Important
Ex 8.4, 4 (iii) [MCQ] Important
Ex 8.4, 4 (iv) [MCQ] You are here
Ex 8.4, 5 (i) Important
Ex 8.4, 5 (ii)
Ex 8.4, 5 (iii) Important
Ex 8.4, 5 (iv) Important
Ex 8.4, 5 (v) Important
Ex 8.4, 5 (vi)
Ex 8.4, 5 (vii) Important
Ex 8.4, 5 (viii)
Ex 8.4, 5 (ix) Important
Ex 8.4, 5 (x)
Last updated at March 22, 2023 by Teachoo
Ex 8.4, 4 Choose the correct option. Justify your choice. (iv) (1 + π‘ππ2π΄)/(1 + πππ‘2π΄) sec2 A (B) β1 (C) cot2 A (D) tan2 A (1 + π‘ππ2π΄)/(1 + πππ‘2π΄) = (1 + π ππ2π΄/( πππ 2 π΄))/(1 + πππ 2π΄/(π ππ2 π΄)) = ((πππ 2 π΄ + π ππ2 π΄)/(πππ 2 π΄))/((π ππ2 π΄ + πππ 2 π΄)/π ππ2π΄) = (πππ 2 π΄ + π ππ2 π΄)/(πππ 2 π΄) Γ (π ππ2 π΄)/(πππ 2 π΄ + π ππ2 π΄) = 1/(πππ 2 π΄) Γ (π ππ2 π΄)/1 = (π ππ2 π΄)/(πππ 2 π΄) = ((π ππ π΄)/(πππ π΄))^2 = tan2 A Answer = tan2 A Hence, option (D) is correct