NCERT Class 10

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 ,

Choose the correct option. Justify your choice. (iii) (sec A + tan A) (1 – sin A) = Choose the correct option. Justify your choice. (iii) (sec A + tan A) (1 - sin A) = October 5, 2020 Category: Chapter 8 - Introduction to Trigonometry , Maths , NCERT Class 10 ,

Choose the correct option. Justify your choice. (ii) (1 + tan θ + sec θ) (1 + cot θ – cosec θ) = Choose the correct option. Justify your choice. (ii) (1 + tan θ + sec θ) (1 + cot θ - cosec θ) = October 5, 2020 Category: Chapter 8 - Introduction to [...]

Choose the correct option. Justify your choice. (i) 9 sec^2 A – 9 tan^2 A = Choose the correct option. Justify your choice. (i) 9 sec^2 A - 9 tan^2 A = October 5, 2020 Category: Chapter 8 - Introduction to Trigonometry , Maths , NCERT Class 10 ,

Evaluate: sin 25 cos 65 + cos 25 sin 65 Evaluate: sin 25 cos 65 + cos 25 sin 65 October 5, 2020 Category: Chapter 8 - Introduction to Trigonometry , Maths , NCERT Class 10 ,

Evaluate : sin square 63 + sin square 27 / cos square 17 + cos square 73 Evaluate : sin square 63 + sin square 27 / cos square 17 + cos square 73 October 5, 2020 Category: Chapter 8 - Introduction to Trigonometry , Maths , NCERT Class 10 ,

Write all the other trigonometric ratios of A in terms of sec A. Write all the other trigonometric ratios of A in terms of sec A. October 5, 2020 Category: Chapter 8 - Introduction to Trigonometry , Maths , NCERT Class 10 ,