Use mathematical table to evaluate (cos40° - sin30°)

Assessment: WAEC SSCE - General Mathematics - 1990 (Objective) Subject: General Mathematics

Question 1 Report

Use mathematical table to evaluate (cos40° - sin30°)

Answer Details
To evaluate (cos40° - sin30°), we first need to find the values of cos40° and sin30°. Using a mathematical table (such as a trigonometric table), we can look up the values of cos40° and sin30°: - cos40° = 0.7660 - sin30° = 0.5000 Now we can substitute these values into the expression: (cos40° - sin30°) = (0.7660 - 0.5000) = 0.2660 Therefore, the answer is option (D) 0.2660.
Read lesson note on Sine, Cosine And Tangent Of An Angle (WAEC)
Read lesson note on Introductory Calculus (WAEC)
View Answer

Related Questions

1

If log x = \(\bar{2}.3675\) and log y = 0.9750, what is the value of x + y? Correct to three significant figures
2

Evaluate using the logarithm table, log(0.65)2
3

Simplify 125\(^{\frac{-1}{3}}\) x 49\(^{\frac{-1}{2}}\) x 10\(^0\)
4

If 3\(^{2x}\) = 27, what is x?
5

While doing his physics practical, Idowu recorded a reading as 1.12cm instead of 1.21cm. Calculate his percentage error
6

Express 0.00562 in standard form
7

Simplify \(\frac{\log \sqrt{8}}{\log 8}\)
8

Given that 1/3log10 P = 1, find the value of P

Download The App On Google Playstore

Everything you need to excel in your exams

Green Bridge CBT Mobile App
Personalized AI Learning Chat Assistant
200,000+ Exam Questions Across IGCSE, JAMB, WAEC & NECO
Over 3,900 Lesson Notes
Offline Support - Learn Anytime, Anywhere
Green Bridge Timetable
Literature Summaries & Potential Questions
Track Your Performance & Progress
In-depth Explanations for Comprehensive Learning