Question

10th class maths important formulas and questions. ​

Answer 1

Answer:

The list of maths formulas are: Pair of Linear Equation in Two Variables Formulas.

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Other Trigonometric formulas:

• sin(90° – θ) = cos θ
• cos(90° – θ) = sin θ
• tan(90° – θ) = cot θ
• cot(90° – θ) = tan θ
• sec(90° – θ) = cosecθ
• cosec(90° – θ) = secθ
• sin2θ + cos2 θ = 1.
• sec2 θ = 1 + tan2θ for 0° ≤ θ < 90°

Answer 2

Answer:

The list of maths formulas are: Pair of Linear Equation in Two Variables Formulas.

...

Other Trigonometric formulas:

1. sin(90° – θ) = cos θ
2. cos(90° – θ) = sin θ
3. tan(90° – θ) = cot θ
4. cot(90° – θ) = tan θ
5. sec(90° – θ) = cosecθ
6. cosec(90° – θ) = secθ
7. sin2θ + cos2 θ = 1.
8. sec2 θ = 1 + tan2θ for 0° ≤ θ < 90°