Teacha
  • Courses
  • Mock Exams
  • For Tutors
  • For Schools
  • Pricing
Log InStart Free
  1. Past Questions
  2. /
  3. NDA
  4. /
  5. Mathematics
  6. /
  7. 2012/2013
  8. /
  9. Q28
Question 28

Using trigonometric identities Cos 3 is same as

  • A.Cos3x - 3 Cosx
  • B.4Cos 3x - 3 Cosx
  • C.3 Cos3x - 4 Cosx
  • D.Cosx - 3 Cosx
Objective

Question details

Exam body
NDA
Subject
Mathematics
Year
2012/2013
Question no.
#28
Type
Objective
Previous · Q27Which of the following is true about any rhombus Next · Q29 SinxCosy is same as

More from this paper

  • Q24A number of the for An + bn + Cn + d where A = 4, b = 2, c = 2, d = 1 and n=10)…
  • Q25The set of values satisfying the inequality $|{10-x}/{3}| < 2$
  • Q26Which of the following is not true?
  • Q30What is the area of the triangle RTS to the nearest whole number?
  • Q31In a class of 40 students, 20 offer Physics. 35 offer Chemistry and 18 offer…
  • Q32A point Q divides a line segment MN joining the point M(-2,3)and N (6, -4)…
See all Mathematics 2012/2013 questions
Teacha

Africa's learning & exam readiness platform. Built for students, tutors, and schools.

Platform

  • Courses
  • Mock Exams
  • Past Questions

For You

  • I'm a Tutor
  • I'm a School
  • Pricing

© 2025 Teacha. Built for African learners, tutors, and schools. Teacha is not affiliated with WAEC, NECO, or JAMB. All past questions are sourced from publicly available materials.

Privacy PolicyTerms of UseCookie Policy