Unit 13 · Class 10 IB MYP · Formula Sheet
Trigonometric Equations & Identities Formulas — Class 10 IB MYP
Prove basic trigonometric identities and solve trigonometric equations within given domains.
Key Formulas
Pythagorean Identity
\sin^2\theta + \cos^2\theta = 1
Double Angle (sin)
\sin 2\theta = 2\sin\theta\cos\theta
Double Angle (cos)
\cos 2\theta = \cos^2\theta - \sin^2\theta
Solving Trig Equations
\text{Find principal value, then use symmetry of unit circle}
Worked Examples
1Using: Linear Equation
Solve 3x + 5 = 20.
Step 1: 3x = 20 - 5 = 15.
Step 2: x = 15 / 3 = 5.
Answer: x = 5
2Using: Algebraic Identity
Expand (a + 3)^2.
Step 1: Using (a + b)^2 = a^2 + 2ab + b^2
Step 2: = a^2 + 6a + 9.
Answer: a^2 + 6a + 9
Practice Now
Apply these formulas with 60+ practice questions and AI-powered doubt clearing.
More Class 10 IB MYP Formulas
Frequently Asked Questions
How many formulas are in Class 10 IB MYP Trigonometric Equations & Identities?+
How to remember Trigonometric Equations & Identities formulas easily?+
Are these Trigonometric Equations & Identities formulas enough for exams?+
Master Trigonometric Equations & Identities on SparkEd
Go beyond formulas. Practice at three difficulty levels with instant feedback, step-by-step solutions, and an AI coach.
Start Practising FreeSparkEd Maths provides free formula sheets for Class 1-10 across 7 education boards. All formulas are aligned to the 2025-26 syllabus.