CBSE Class 10 Mathematics Trignometry Printable Worksheet Set E

   Trignometry  Q.- Prove the following identities :  (i) cos4 A – cos2 A = sin4 A – sin2 A  (ii) cot4 A – 1 = cosec4 A – 2cosec2 A  (iii) sin6 A + cos6 A = 1 – 3sin2 A cos2 A.    Sol. (i) We have,  LHS = cos4A – cos2A =…

CBSE Class 10 Mathematics Trignometry Printable Worksheet Set D

  Trignometry Q.- Express each of the following in terms of trigonometric ratios of angles between 0º and 45º; (i) cosec 69º + cot 69º (ii) sin 81º + tan 81º (iii) sin 72º + cot 72º   Sol.(i) We have, cosec 69º + cot 69º = cosec (90º – 21º) + cot (90º – 21º…

CBSE Class 10 Mathematics Trignometry Printable Worksheet Set C

  Trignometry Q.-  Without using trigonometric tables evaluate the following : (i) sin2 25º + sin2 65º     (ii) cos2 13º – sin277º   Sol. (i) We have, sin225º + sin265º = sin2 (90º – 65º) + sin265º = cos265º + sin265º = 1   …

CBSE Class 10 Mathematics Trignometry Printable Worksheet Set B

  Trignometry Q.- In ΔABC, right –angled at B, AB = 7 cm and (AC – BC) = 1 cm. Find the values of sin C and cos C.   Sol. Δ Consider ∠ABC in which ∠B = 90º, AB = 7 cm and (AC – BC) = 1 cm. By Pythagoras theorem, we have : AB2 + BC2 = AC2 => (7…

CBSE Class 10 Trigonometry Printable Worksheet Set A

  Trigonometry   Trigonometry is that branch of mathematics which deals with the measurements of angles and the problem allied with the angles.   Trigonometry Ratios (T-ratios) of an acute angle of a Right Angled Triangle    …

NCERT Solutions Class 10 Mathematics Chapter 9 Some Application of Trigonometry

Q.1) A circus artist is climbing a 20 m long rope, which is tightly stretched and tied from the top of a vertical pole to the ground. Find the height of the pole, if the angle made by the rope with the ground level is 30° Sol.1) Let AB be the vertical pole AC be…

NCERT Solutions Class 10 Mathematics Chapter 8 Introduction to Trigonometry

Exercise 8.1 Q.1) In Δ ABC, right-angled at 𝐵, 𝐴𝐵 = 24 𝑐𝑚, 𝐵𝐶 = 7 𝑐𝑚. Determine : (i) sin 𝐴 , cos 𝐴 (ii) sin 𝐶 , cos 𝐶 Sol.1) In 𝛥 𝐴𝐵𝐶, ∠𝐵 = 90° By Applying Pythagoras theorem , we get 𝐴𝐶2 = 𝐴𝐵2 + 𝐵𝐶2 = (24)2 + 72 = (576 + 49)𝑐𝑚2 = 625 𝑐𝑚2 ⇒ 𝐴𝐶 = 25 (…

CBSE Class 10 Introduction to Trigonometry Sure Shot Questions Set D

  CBSE Class 10 Introduction to Trigonometry Sure Shot Questions Set D. There are many more useful educational material which the students can download in pdf format and use them for studies. Study material like concept maps, important and sure shot question banks, quick…

CBSE Class 10 Introduction to Trigonometry Sure Shot Questions Set C

  CBSE Class 10 Introduction to Trigonometry Sure Shot Questions Set C. There are many more useful educational material which the students can download in pdf format and use them for studies. Study material like concept maps, important and sure shot question banks, quick…

CBSE Class 10 Introduction to Trigonometry Sure Shot Questions Set B

Question. If tan A = 4/3 , the value of sin A is (a) 4/5 (b) 3/4 (c) 5/3 (d) 7/5 Answer : A Question. If 3 tan A = 4, then the value of  3 sin A + cos A / 3 sin A - 2 cos A is: (a) 4 (b) 11/15 (c) 7/15 (d) 3 Answer : D Question. If sin θ +…

CBSE Class 10 Introduction to Trigonometry Sure Shot Questions Set A

  CBSE Class 10 Introduction to Trigonometry Sure Shot Questions Set A. There are many more useful educational material which the students can download in pdf format and use them for studies. Study material like concept maps, important and sure shot question banks, quick…

CBSE Class 10 Introduction to Trigonometry Important Formulas and concepts for exams

  CBSE Class 10 Introduction to Trigonometry Important Formulas and concepts for exams. There are many more useful educational material which the students can download in pdf format and use them for studies. Study material like concept maps, important and sure shot…

CBSE Class 10 Application of Trigonometry Sure Shot Questions Set A

  CBSE Class 10 Application of Trigonometry Sure Shot Questions Set A. There are many more useful educational material which the students can download in pdf format and use them for studies. Study material like concept maps, important and sure shot question banks, quick…

CBSE Class 10 Application of Trigonometry Important Formulas and concepts for exams

  CBSE Class 10 Application of Trigonometry Important Formulas and concepts for exams. There are many more useful educational material which the students can download in pdf format and use them for studies. Study material like concept maps, important and sure shot…