# IPMAT Question Paper 2020 | IPM Indore Quants

###### IPMAT Sample Paper | IPMAT Question Paper | Question 14

IPMAT 2020 Question Paper IPM Indore Quantitative Ability. Solve questions from IPMAT 2020 Question Paper from IPM Indore and check the solutions to get adequate practice. The best way to ace IPMAT is by solving IPMAT Question Paper. To solve other IPMAT Sample papers, go here: IPM Sample Paper

Question 14 : The value of cos2$$frac{π}{8}$ + cos2$\frac{3π}{8}$ + cos2$\frac{5π}{8}$ + cos2$\frac{7π}{8}$ is 1. 1 2. $\frac{3}{2}$ 3. 2 4. $\frac{9}{4}$ ## Best CAT Online Coaching Try upto 40 hours for free Learn from the best! #### 2IIM : Best Online CAT Coaching. ### Video Explanation ## Best CAT Coaching in Chennai #### CAT Coaching in Chennai - CAT 2021Online Batches Available Now! ### Explanatory Answer Now adding cos2$\frac{π}{8}$ and cos2$\frac{7π}{8}$ Then cos2$\frac{3π}{8}$ and cos2$\frac{5π}{8}$ cos2$\frac{π}{8}$ is same as cos2$\frac{7π}{8}$ cos2$\frac{3π}{8}$ is same as cos2$\frac{5π}{8}$ Question can be rephrased as 2cos2$\frac{π}{8}$ + 2cos2$\frac{3π}{8}$ $\frac{π}{8}$ + $\frac{3π}{8}$ = $\frac{π}{2}$ cos$90 - θ) = sin θ

So, cos2$$frac{3π}{8}$ = sin2$\frac{π}{8}$ 2cos2$\frac{π}{8}$ + 2sin2$\frac{π}{8}$ 2[cos2 θ + sin2 θ] 2 = 2 The question is " The value of cos2$\frac{π}{8}$ + cos2$\frac{3π}{8}$ + cos2$\frac{5π}{8}$ + cos2$\frac{7π}{8}$ is " ##### Hence, the answer is 2 Choice C is the correct answer. ###### Best Indore IPM & Rohtak IPM CoachingSignup and sample 9 full classes for free. Register now! ###### Already have an Account? ##### Where is 2IIM located? 2IIM Online CAT Coaching A Fermat Education Initiative, 58/16, Indira Gandhi Street, Kaveri Rangan Nagar, Saligramam, Chennai 600 093 ##### How to reach 2IIM? Phone:$91) 44 4505 8484
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