Ex 3.2

Ex 3.2, 1

Ex 3.2, 2 (i)

Ex 3.2, 2 (ii) Important

Ex 3.2, 2 (iii)

Ex 3.2, 2 (iv)

Ex 3.2, 3 (i)

Ex 3.2, 3 (ii) Important

Ex 3.2, 3 (iii)

Ex 3.2, 3 (iv) Important

Ex 3.2, 3 (v)

Ex 3.2, 3 (vi) Important

Ex 3.2, 4

Ex 3.2, 5

Ex 3.2, 6 You are here

Ex 3.2, 7 (i)

Ex 3.2, 7 (ii) Important

Ex 3.2, 8

Ex 3.2, 9

Ex 3.2, 10

Ex 3.2, 11

Ex 3.2, 12 Important

Ex 3.2, 13 Important

Ex 3.2, 14

Ex 3.2, 15

Ex 3.2, 16 Important

Ex 3.2, 17 Important

Ex 3.2, 18

Ex 3.2, 19 Important

Ex 3.2, 20 Important

Ex 3.2, 21 (MCQ) Important

Ex 3.2, 22 (MCQ) Important

Chapter 3 Class 12 Matrices

Serial order wise

Last updated at April 16, 2024 by Teachoo

Ex 3.2, 6 Simplify cos θ[■8(cos θ&sin θ@−sin θ&cos θ)] + sin θ [■8(sin θ&−cos θ@cos θ&sin θ)] cos θ[■8(cos θ&sin θ@−sin θ&cos θ)] + sin θ [■8(sin θ&−cos θ@cos θ&sin θ)] = [■8("cos " θ("cos " θ)&cos θ(sin θ)@cos θ (−𝑠𝑖𝑛θ)&cos θ(cos θ))] + [■8(sin θ(sin θ)&sin θ(−"cos " θ) @sin θ("cos " θ)&sin θ(sin θ))] = [■8(𝐜𝐨𝐬𝟐 𝜽&𝐜𝐨𝐬 𝛉 𝐬𝐢𝐧 𝜽@−𝐜𝐨𝐬 𝛉 𝐬𝐢𝐧 𝜽&𝐜𝐨𝐬𝟐 𝜽)] + [■8(𝐬𝐢𝐧𝟐 𝜽&−𝐜𝐨𝐬 𝛉 𝐬𝐢𝐧 𝜽@𝐬𝐢𝐧 𝛉 𝐜𝐨𝐬 𝜽&𝐬𝐢𝐧𝟐 𝜽)] = [■8(cos2 θ+sin2 θ&sin θ cos θ−cos θ sin θ@−cos θ sin θ+sin θ cos θ&cos2 θ+sin2 θ)] = [■8(cos2 θ+sin2 θ&0@0&cos2 θ+sin2 θ)] = [■8(𝟏&𝟎@𝟎&𝟏)]