Teacha
  • Courses
  • Mock Exams
  • For Tutors
  • For Schools
  • Pricing
Log InStart Free
  1. Past Questions
  2. /
  3. JAMB
  4. /
  5. Mathematics
  6. /
  7. 1981
  8. /
  9. Q0
Question 0

If sinxo = what is sin (90 - x)o?

  • A.\(\frac{\sqrt{b^2 - a^2}}{b}\)
  • B.1\(\frac{-a}{b}\)
  • C.\(\frac{b^2 - a^2}{b}\)
  • D.\(\frac{a^2 - b^2}{b}\)
  • E.\(\sqrt{b^2 - a^3}\)
Objective

Question details

Exam body
JAMB
Subject
Mathematics
Year
1981
Question no.
#0
Type
Objective
Previous · Q0The weights 30 new-born babies are given as follow: 6, 9, 5, 7, 6, 7, 5, 8, 9… Next · Q0 7 pupils of average age 12 years leave a class of 25 pupils of average age 14…

More from this paper

  • Q0Suppose x varies inversely as y, y varies directly as the square of t and x = 1…
  • Q0If sine x equals cosine x, what is x in radians?
  • Q0The ratio of the price of a loaf of bread to the price of a packet of sugar by…
  • Q0Find a two-digital number such that three times the terms digit is 2 less than…
  • Q0Find the value of x satisfying \(\frac{x}{2}\) - \(\frac{1}{3}\) \)
  • Q0A group of 14 children children received the following scores in a reading test…
See all Mathematics 1981 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