Engineering Mathematics I

Electrical Engineering · Level 5  ·  5 Chapters

Compiled by: Joan Cherono

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What Engineering Mathematics I covers

Numbers, algebra, trigonometry, coordinate geometry and binomial expansion form Engineering Mathematics I for Electrical Engineering Level 5. Number systems cover types of numbers, percentages, factors, LCM, fractions, decimals and square roots. Algebra covers indices, logarithms, simultaneous equations and quadratics. Trigonometry includes ratios, identities, equations, triangles and hyperbolic functions with their engineering applications. Coordinate geometry brings polar and Cartesian equations, normals and tangents, and loci. The last outcome is binomial expansion, from the binomial theorem to estimating values in engineering calculations.

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Careers after Engineering Mathematics I

Electrical engineering relies on solid math foundations, and the abilities you develop in this unit open doors across Kenya’s power, telecom, construction, and manufacturing sectors. Whether you join a team or launch your own service, these calculations become the tools that turn ideas into real, paying projects.

  • Electrical design offices in Nairobi’s industrial zones - you solve simultaneous equations and apply trigonometric ratios to size transformers, design three-phase wiring, and produce load-flow calculations, earning a regular salary as a design engineer.
  • Solar PV installation firms in Kiambu and Nakuru - you use quadratic equations and triangle-side calculations to determine optimal panel tilt angles and cable lengths, charging clients for system design, installation, and performance guarantees.
  • Telecommunications network planning teams in Mombasa’s port area - you apply coordinate geometry, normals and tangents, and hyperbolic function conversions to plot antenna sites, optimise line-of-sight, and model signal attenuation, receiving wages as a radio-frequency (RF) engineer.
  • Construction surveying crews in Eldoret and Kitale - you calculate triangle sides, angles, and areas with Hero’s formula to set out foundations and road alignments, earning daily rates as a surveyor’s assistant or subcontractor.
  • Manufacturing workshops producing motor-control panels in Thika - you solve three-unknown simultaneous equations to balance three-phase loads and use indices for power-factor correction, being paid as a production or quality-control engineer.
  • Technical tutoring centres in Nairobi’s Westlands and Kisumu - you teach these mathematics concepts to secondary students and adult learners, generating income from tuition fees and exam-preparation workshops.
  • Freelance robotics and automation projects in Kisumu - you evaluate trigonometric and hyperbolic functions to program robotic arm trajectories, selling prototypes or offering custom automation services to small factories.
  • Renewable-energy consultancy for mini-hydro schemes in the highlands - you apply quadratic and trigonometric calculations to estimate water flow, head, and turbine sizing, billing clients for feasibility studies and detailed design reports.
  • Automotive repair shops in Nakuru and Machakos - you use integer arithmetic and indices to compute gear ratios, torque specifications, and fuel-efficiency formulas, charging for diagnostic and performance-tuning services.
  • Computer-aided design (CAD) drafting studios in Nairobi’s CBD - you employ coordinate-geometry techniques to create precise electrical schematics and layout drawings, earning per-project fees for design contracts.

Mastering these mathematical tools means you can move confidently from the classroom to any of these vibrant workplaces, turning numbers into earnings and career growth. Keep practicing - each calculation you perfect brings you one step closer to a thriving future in Kenya’s engineering landscape.

Chapters

What Engineering Mathematics I covers: 34 main topics in 5 chapters

1. Apply number systems

  1. 1.1 Types of numbers
  2. 1.2 Percentages
  3. 1.3 Factors
  4. 1.4 Divisibility Test
  5. 1.5 LCM
  6. 1.6 Integers
  7. 1.7 Fractions
  8. 1.8 Decimals
  9. 1.9 Arithmetic operation
  10. 1.10 Squares and square roots

2. Apply algebra

  1. 2.1 Indices and logarithms
  2. 2.2 Algebra
  3. 2.3 Simultaneous Equation
  4. 2.4 Solve simultaneous equation by;
  5. 2.5 Quadratic expressions and equations

3. Apply Trigonometry and Hyperbolic functions

  1. 3.1 Importance of trigonometry in engineering
  2. 3.2 Trigonometric Ratios and Functions
  3. 3.3 Trigonometric Identities
  4. 3.4 Solving Trigonometric Equations
  5. 3.5 Trigonometry in Triangles
  6. 3.6 Introduction to Hyperbolic Functions
  7. 3.7 Hyperbolic Identities
  8. 3.8 Solving Hyperbolic Equations
  9. 3.9 Applications of Hyperbolic Functions in Engineering

4. Perform coordinates geometry

  1. 4.1 Polar equations
  2. 4.2 Cartesian equation
  3. 4.3 Graphs of polar equations
  4. 4.4 Normal and tangents
  5. 4.5 Loci

5. Carry out binomial expansions

  1. 5.1 Basic concepts of binomial theorem
  2. 5.2 Binomial Expansion
  3. 5.3 Applications of Binomial Expansion
  4. 5.4 Engineering Applications
  5. 5.5 Estimating values in engineering calculations

Revise this unit

3 more for this unit

Beyond the syllabus

Other units in Module IV