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CAT Questions | CAT Geometry Questions | Trigonometry

IMPORTANCE OF THIS TOPIC IN THE VARIOUS EXAMINATIONS

Trigonometry- Quantitative Aptitude is an important topic when it comes to MBA Entrance exams. This is one of the most important aspects of Quantitative Aptitude. The reason why this is being included as a sub-topic under Quantitative Aptitude is it helps students work out basic concepts in geometry and also complex angles and dimensions in relatively little time. Since the last few years, especially from 2017, very few geometry aptitude questions have been coming in every entrance exam. Nevertheless, it is good to go prepared.

Trigonometry concepts vary a lot. CAT Geometry Questions from Trigonometry can vary from heights and distances to concepts of identities.

FREQUENCY OF TRIGONOMETRY QUESTIONS IN THESE EXAMS

CAT

YEARSLOTNO OF QUESTIONSGOOD ATTEMPTDIFFICULTY LEVEL
2019
111Easy
211Easy
2018
121Moderate
211Easy

XAT

YEARNO OF QUESTIONSGOOD ATTEMPTDIFFICULTY LEVEL
202021Moderate
201921Difficult
201811Moderate

SNAP

YEARNO OF QUESTIONSGOOD ATTEMPTDIFFICULTY LEVEL
201910Difficult
2018
201711Moderate
2016

CMAT

YEARNO OF QUESTIONSGOOD ATTEMPTDIFFICULTY LEVEL
201921Difficult
2018
2017
201611Easy

Basic concepts of Trigonometry

1. Specific functions of angles and their applications to calculations. For e.g. sine (sin), cosine (cos), tangent (tan), cotangent (cot), secant (sec) and cosecant (csc)

2. Questions related to height & distance using pythagoras theorem.

3. Product-to-sums & vice-versa.

4. Trigonometric identities & even odd identities.

5. Learning about the six basic trigonometric ratios. The key is that each trigonometric function becomes periodic which means that values repeat in equal trends

66. Finding the Unit Circle – For e.g. Each point (X, Y) on a circle gives values of cosine and sine of the corresponding angle

7. Finding Pythagorean identities. For e.g. When applied to the unit circle, we get a trio of the useful trigonometric function

CAT Questions | CAT Geometry: Trigonometry

1. The number of the real roots of the equation 2cos(x(x + 1)) = 2x + 2-x is? (CAT 2019 Slot 1)
A. 0
B. Infinite
C. 1 
D. 2

Answer

C. 1 (CORRECT ANSWER)

2. 3sinx + 4cosx + r is always greater than or equal to 0. What is the smallest value ‘r’ can to take? (CAT 2018 Slot 2)
A. 5
B. -5 
C. 4
D. 3

Answer

B. -5 (CORRECT ANSWER)

3. Consider a regular hexagon ABCDEF. There are towers placed at B and D. The angle of elevation from A to the tower at B is 30 degrees, and to the top of the tower at D is 45 degrees. What is the ratio of the heights of towers at B and D? (CAT 2018 Slot 2)
A. 1:√3
B. 1:2√3 
C. 1:2
D. 3:4√3

Answer

B. 1:2√3 (CORRECT ANSWER)

4. What is the value of (1-CosA) / (1+CosA) given that tan A = 3/4 ? (CAT 2016 Slot 1)
A. 1/4
B. 9/16
C. 1/9 
D. 1/3

Answer

C. 1/9 (CORRECT ANSWER)

How to deal with Trigonometry preparation

LEVEL 1

 

  1. Students are supposed to have basic knowledge of trigonometry concepts from MBAP CAT E Book (Concept Theory) study material
  2. They should have a fast calculation mindset 
  3. The first step is to clear all your basics. Take help of live lectures. Solve questions from MBAP CAT E Book (Practice Questions).
  4. 4When it comes to CAT Geometry Questions from trigonometry, students should have the skill to identify which identity is been needed to solve the problems on geometry. Follow lecture notes.

LEVEL 2

 

1. Domain and range are an important part of trigonometric function, so to remember it plot these graphs by on your own 
2. Inverse trigonometry may be tough for the first time, but more and more practice make it easy. Trigonometry questions focus a lot on inverse trigonometry 
3. Always try to solve trigonometry questions using a different approach and also go through MBAP Topic wise Previous Year CAT Question
4. Trigonometry concepts starts with the triangles .so keep in your mind that behind every question there is a triangle 
5. If you are going for an objective approach then you can put Theta is equal to 0 degrees, 30 degrees, 45 degrees, 60 degrees, 90 degrees, but always keep in your mind that it is not a hard and fast rule which is always to be true 

LEVEL 3

 

Students need to look into trigonometry problems that use multiple concepts to find the solution. Try to answer trigonometry questions from the advanced level of previous cat papers, mock tests, and materials. Finish all the concepts examples and questions given in the NCERT maths book along with miscellaneous exercises. Referring to algebra books by SK Goyal and RD Sharma is very helpful but it is suggested to go through any one of these books simply to avoid confusion. Trigonometry concepts with tons of solved examples and diagrams make the problems easy for a candidate and they can perform better. Reference books by a few authors are helpful but a candidate should choose that totally based upon his standards. Taking too much time for advanced questions will be harmful to crack the exam. Finally, students need to practice as many questions as they can to get a hold of the concepts and find solutions fast. Practice will always help a candidate to crack the trigonometry questions

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