Chapter 8 – Introduction to Trigonometry

Prove the following identities, where the angles involved are acute angles for which the expressions are defined. (viii) (sin A + cosec A)^2 + (cos A + sec A)^2 = 7+tan^2A + cot^2A Prove the following identities where the angles involved are acute angles for which the expressions are defined. (viii) (sin A + cosec [...]

Prove the following identities, where the angles involved are acute angles for which the expressions are defined. (vii) (sin θ – 2sin^3θ)/(2cos^3θ-cos θ) = tan θ Prove the following identities where the angles involved are acute angles for which the expressions are defined. (vii) (sin θ - 2sin^3θ)/(2cos^3θ-cos θ) = tan θ October 5, 2020 [...]

Prove the following identities, where the angles involved are acute angles for which the expressions are defined. (vi) root 1−sinA/1+sinA = sec A + tan A Prove the following identities where the angles involved are acute angles for which the expressions are defined. (vi) root 1−sinA/1+sinA = sec A + tan A October 5, 2020 [...]

Prove the following identities, where the angles involved are acute angles for which the expressions are defined. (v) cosA+sinA-1/cosA−sinA+1 = cosec A + cot A, Using the identity cosec^2 A=1 + cot^2 A Prove the following identities Using the identity cosec^2 A=1 + cot^2 A where the angles involved are acute angles for which the [...]

Prove the following identities, where the angles involved are acute angles for which the expressions are defined. (ix) (cosec A – sin A)(sec A – cos A) = 1/(tan A + cot A) Prove the following identities where the angles involved are acute angles for which the expressions are defined. (ix) (cosec A – sin [...]

Prove the following identities, where the angles involved are acute angles for which the expressions are defined. (iv) (1 + sec A)/sec A = sin^2A/(1-cos A) Prove the following identities where the angles involved are acute angles for which the expressions are defined. (iv) (1 + sec A)/sec A = sin^2A/(1-cos A) October 5, 2020 [...]

Prove the following identities, where the angles involved are acute angles for which the expressions are defined. (iii) 1−cotθ/tanθ + 1−tan/θcotθ =1+secθcosec θ Prove the following identities where the angles involved are acute angles for which the expressions are defined. (iii) 1−cotθ/tanθ + 1−tan/θcotθ =1+secθcosec θ October 5, 2020 Category: Chapter 8 - Introduction to [...]

Prove that cos A/1+sin A + 1+sin A/cos A = 2 sec A Prove that cos A/1+sin A + 1+sin A/cos A = 2 sec A October 5, 2020 Category: Chapter 8 - Introduction to Trigonometry , Maths , NCERT Class 10 ,

Prove that (cosec theta-cot theta)^2=(1-cos theta),(1+cos theta) (1+cos theta) Prove that (cosec theta-cot theta)^2=(1-cos theta) October 5, 2020 Category: Chapter 8 - Introduction to Trigonometry , Maths , NCERT Class 10 ,

Choose the correct option. Justify your choice. (iv) 1+tan^2 A/1+cot^2 A = Choose the correct option. Justify your choice. (iv) 1+tan^2 A/1+cot^2 A = October 5, 2020 Category: Chapter 8 - Introduction to Trigonometry , Maths , NCERT Class 10 ,