IMPORTANCE OF THIS TOPIC IN THE VARIOUS EXAMINATIONS
Quantitative Aptitude is an important topic when it comes to MBA Entrance exams. Trigonometry is one of the most important aspects of Quantitative Aptitude. The reason why Trigonometry is being included as a sub-topic under Quantitative Aptitude is it helps students work out complex angles and dimensions in relatively little time. Trigonometry questions helps the candidate understand the trigonometry identities. Students learn important trigonometry concepts like Angles and Unit circles. Since the last few years, especially from 2017, very few trigonometry questions have been coming in every entrance exam. Nevertheless, it is good to go prepared.
Trigonometry concepts vary a lot. Trigonometry Questions can vary from heights and distances to concepts of identities.
Entrance exams like CAT and GMAT test a person on both these fronts.
FREQUENCY OF TRIGONOMETRY QUESTIONS IN THESE EXAMS
1. The number of the real roots of the equation 2cos(x(x + 1)) = 2x + 2-x is? (CAT 2019 Slot 1)
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)
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)
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)
C. 1/9 (CORRECT ANSWER)
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 NCRT 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