Ex 8.2
Ex 8.2, 1 (ii)
Ex 8.2, 1 (iii)
Ex 8.2, 1 (iv) Important
Ex 8.2, 1 (v) Important
Ex 8.2, 2 (i) (MCQ) You are here
Ex 8.2, 2 (ii) (MCQ)
Ex 8.2, 2 (iii) (MCQ) Important
Ex 8.2, 2 (iv) (MCQ)
Ex 8.2, 3 Important
Ex 8.2, 4 (i) Important
Ex 8.2, 4 (ii) Important
Ex 8.2, 4 (iii)
Ex 8.2, 4 (iv)
Ex 8.2, 4 (v) Important
Last updated at April 16, 2024 by Teachoo
Ex 8.2, 2 Choose the correct option and justify your choice : (i) (2 tanβ‘γ30Β°γ)/(1 + π‘ππ2 30Β°) = sin 60Β° (B) cos 60Β° (C) tan 60Β° (D) sin 30Β° We know that , tan "30Β°" = π/βπ So, (π πππβ‘γππΒ°γ)/(π + ππππ ππΒ°) = (π Γ (π/βπ))/(π + (π/βπ)^π ) = (2/β3)/(1 + 1/3) = (2/β3)/(4/3) = π/βπΓπ/π = 2/β3Γ(β3 Γ β3)/4 = βπ/π Options are (A) sin 60Β° (B) cos 60Β° (C) tan 60Β° (D) sin 30Β° Since, sin "60Β°" = βπ/π So, the correct answer is (a)