CELE Engineering Mathematics — Plane and Spherical TrigonometryFlash Cards
Flashcards for Plane and Spherical Trigonometry reviewers. Front of card: a question or prompt. Back of card: the answer plus a short explanation. Every card is calibrated to the way CELE tests Plane and Spherical Trigonometry in its Engineering Mathematics subtest.
Exam context
Professional Regulation Commission (PRC) — Board of Civil Engineering runs the Civil Engineer Licensure Examination on May and November 2026. Its Engineering Mathematics section sits under a "Core" weighting, and Plane and Spherical Trigonometry is the 2nd chapter in the 10-chapter CELE Engineering Mathematics rotation. The CELE passing mark is 70% weighted average, no sub-test below 50%, and the most recent 2026 paper drew about a meaningful share of questions from Engineering Mathematics.
Plane and Spherical Trigonometry - Flashcards
Cards
Topic
Right Triangle Trigonometry - Angle of Elevation
Card Id
FC1
Topic
Law of Cosines
Card Id
FC2
Topic
Fundamental Trigonometric Identity
Card Id
FC3
Topic
Law of Sines - Angle-Opposite Side Pairs
Card Id
FC4
Topic
Heron's Formula for Triangle Area
Card Id
FC5
Topic
Ambiguous Case (SSA) in Law of Sines
Card Id
FC6
Topic
Solving Oblique Triangles - SSS Case
Card Id
FC7
Topic
Double-Angle Formulas
Card Id
FC8
Topic
Triangle Area using SAS (Side-Angle-Side)
Card Id
FC9
Topic
Surveying and Triangulation - AAS Case
Card Id
FC10
Topic
Quotient Identity and Its Derivation
Card Id
FC11
Topic
Right Triangle Applications - Guy Wire Problem
Card Id
FC12
Topic
Trigonometric Identity Simplification
Card Id
FC13
Topic
Triangle Area - Comparing Methods
Card Id
FC14
Topic
Spherical Trigonometry - Area from Excess
Card Id
FC15
Topic
Force Resultants Using Law of Cosines
Card Id
FC16
Topic
Angle of Depression Applications
Card Id
FC17
Topic
Derivation of the Law of Cosines
Card Id
FC18
Topic
Right Triangle Applications - Ladder Problem
Card Id
FC19
Topic
Spherical Geometry - Understanding Excess
Card Id
FC20
Stored In
chapter_flashcards
Card Count
20
Summary Only
true
Topic Distribution
Law Of Sines
3
Law Of Cosines
4
Spherical Trigonometry
2
Conceptual Understanding
2
Trigonometric Identities
4
Triangle Area Calculations
3
Right Triangle Trigonometry
4
Angle Of Elevation And Depression
2
Applied Problems (Surveying, Forces, Structures)
4
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