English
Hindi

Question

Download Solution PDF

Find the maximum value of 15sin θ + 20cos θ. 

  1. 25
  2. 35
  3. 30
  4. 5

Answer (Detailed Solution Below)

Option 1 : 25
Free Tests
View all Free tests >
Free
UPSC NDA 01/2025 General Ability Full (GAT) Full Mock Test
150 Qs. 600 Marks 150 Mins
Start Now

Detailed Solution

Download Solution PDF

 

Concept:

If the trigonometric ratio is in the form of 'asin θ + bcos θ'

Then the maximum value = 

And the minimum value = -

Calculation:

15sin θ + 20cos θ

Here a = 15  and b = 20

Then the maximum value = 

= 

= √(625)

= 25 

∴ The maximum value of 15sin θ + 20cos θ is 25.

Download Solution PDF
Latest NDA Updates

Last updated on Jul 8, 2025

->UPSC NDA Application Correction Window is open from 7th July to 9th July 2025.

->UPSC had extended the UPSC NDA 2 Registration Date till 20th June 2025.

-> A total of 406 vacancies have been announced for NDA 2 Exam 2025.

->The NDA exam date 2025 has been announced. The written examination will be held on 14th September 2025.

-> The selection process for the NDA exam includes a Written Exam and SSB Interview.

-> Candidates who get successful selection under UPSC NDA will get a salary range between Rs. 15,600 to Rs. 39,100. 

-> Candidates must go through the NDA previous year question paper. Attempting the NDA mock test is also essential. 

Exams Tests Super Practice

More Trigonometric Functions Questions

Q1.If \(\rm \frac{x}{\cos \theta}=\frac{y}{\cos \left(\frac{2\pi}{3}-\theta\right)}=\frac{z}{\cos\left(\frac{2\pi}{3}+\theta\right)}\) then what is x + y + z equal to? 
Q2.What is \(\rm \frac{\cos 17^\circ-\sin 17^\circ}{\cos 17^\circ+\sin ^\circ}\) equal to
Q3.What is the number of solutions of the equation cot2x cot3x = 1 for 0 < x
Q4.The number of solutions of |cos x| = sinx, such that –4π ≤ x ≤ 4π is :
Q5.Find the value of (sin 75° + sin 15°).
Q6.The general solution of 3 sin2 x - 7 sin x + 2 = 0 is: 
Q7.If A, B and C are angles of a triangle, then which of the following is correct? 
Q8.If 3 sin θ + 5 cos θ = 5, then what is the value of 5 sin θ - 3 cos θ equal to ?  
Q9.Find the angles A and B if 2 cos(A+B) = 2 sin(A-B) = 1:
Q10.The maximum value of \(\frac{1}{\operatorname{cosec} θ}\) (90 ≥ θ ≥ 0) is:

More Trigonometry Questions

Q1.If cosec θ + cot θ = p, then \(\rm\frac{p^2-1}{p^2+1}\) equal:
Q2.If p tan (θ - 30°) = q tan (θ + 120°), then what is (p + q) / (p - q) equal to?
Q3.If \(\rm \frac{x}{\cos \theta}=\frac{y}{\cos \left(\frac{2\pi}{3}-\theta\right)}=\frac{z}{\cos\left(\frac{2\pi}{3}+\theta\right)}\) then what is x + y + z equal to? 
Q4.Consider the following numbers :  I. tan 22.5°  II. cot 22.5°  III. tan 22.5° - cot 22.5°  How many of the above are irrational numbers?
Q5.What is \(\rm \frac{\cos 17^\circ-\sin 17^\circ}{\cos 17^\circ+\sin ^\circ}\) equal to
Q6.What is sin12° sin48° equal to? 
Q7.In a triangle ABC tan A + tan B + tan C = k  What is the value of cot A cot B cot C? 
Q8.What is the general solution of cos100 x - sin100 x = 1?
Q9.What is the number of solutions of the equation cot2x cot3x = 1 for 0 < x
Q10.In a triangle ABC, ∠A = 75° and ∠B = 45°. What is 2a - b equal to?
Suggested Test Series
View All >
Current Affairs (CA) 2025 Mega Pack for SSC/Railways/State Exam Mock Test
431 Total Tests with 1 Free Tests
Start Free Test
Current Affairs (CA) 2024 Mega Pack for SSC/Railways/State Exam Mock Test
427 Total Tests with   1 Free Tests
Start Free Test

NDA Important Links

ResultAdmit CardApplication FormEligibilitySalarySyllabus

More Mathematics Questions

Q1.If cosec θ + cot θ = p, then \(\rm\frac{p^2-1}{p^2+1}\) equal:
Q2.In a binomial distribution, if the mean is 6 and the standard deviation is √2, then what are the values of the parameters n and p respectively?
Q3.Three perfect dice D1, D2 and D3 and are rolled. Let x, represent the numbers on D1, D2 and D3 respectively. What is the number of possible outcomes such that x < y < z?
Q4.Three perfect dice are rolled. Under the condition that no two show the same face, what is the probability that one of the faces shown is an ace (one)?
Q5.The occurrence of a disease in an industry is such that the workers have 20% chance of suffering from it. What is the probability that out of 6 workers chosen at random, 4 or more will suffer from the disease?
Q6.Two perfect dice are thrown. What C is the probability that the sum of the numbers on the faces is neither 9 nor 10?
Q7.Urn A contains 2 white and 2 black balls while urn B contains 3 white and 2 black balls. One ball is transferred from urn A to urn B and then a ball is drawn out of urn B. What is the probability that the ball is white?
Q8.A fair coin is tossed till two heads occur in succession. What is the probability that the number of tosses required is less than 6?  
Q9.The mean of the series x1, x2...xn is x̅ If xn is replaced by k, then what is the new mean?
Q10.Let \(\rm \Sigma_{i=1}^9x_i^2=885\) If M is the mean and σ is the standard deviation of  x1, x2, x3.....x9 then what is the value of M2 + σ2?
Testbook Edu Solutions Pvt. Ltd.
1st & 2nd Floor, Zion Building,
Plot No. 273, Sector 10, Kharghar,
Navi Mumbai - 410210
support@testbook.com
Toll Free:1800 833 0800
Office Hours: 10 AM to 7 PM (all 7 days)
Company
About usCareers We are hiringTeach Online on TestbookPartnersMediaSitemap
Products
Test SeriesTestbook PassOnline CoursesOnline VideosPracticeBlogRefer & EarnBooks
Copyright © 2014-2022 Testbook Edu Solutions Pvt. Ltd.: All rights reserved
User PolicyTermsPrivacy
Hot Links： teen patti master update teen patti real cash teen patti gold new version teen patti master 2023