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A Level Maths

Math Worksheets

Examples, solutions, videos, activities and worksheets that are suitable for A Level Maths.

How to solve trig. equations that require the use of the double angle identities?

Trig. Equations : Double Angle Identity Types : (Example 4)

In this series of tutorials you are shown several examples on how to solve trig. equations that require the use of the double angle identities.

Example:

Solve sin 2x = sin x, for 0° ≤ x ≤ 360°

Trig. Equations : Double Angle Identity Types : (Example 5)

In this series of tutorials you are shown several examples on how to solve trig. equations that require the use of the double angle identities.

Example:

Solve sin(x/2) + cos x = 2, for 0° ≤ x ≤ 360°

Trig. Equations : Double Angle Identity Types : (Example 6)

Example:

Solve 3 tan x = tan 2x, for 0° ≤ x ≤ 2π

You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.

A Level Maths

Math Worksheets

Examples, solutions, videos, activities and worksheets that are suitable for A Level Maths.

How to solve trig. equations that require the use of the double angle identities?

Trig. Equations : Double Angle Identity Types : (Example 4)

In this series of tutorials you are shown several examples on how to solve trig. equations that require the use of the double angle identities.

Example:

Solve sin 2x = sin x, for 0° ≤ x ≤ 360°

In this series of tutorials you are shown several examples on how to solve trig. equations that require the use of the double angle identities.

Example:

Solve sin(x/2) + cos x = 2, for 0° ≤ x ≤ 360°

Example:

Solve 3 tan x = tan 2x, for 0° ≤ x ≤ 2π

Rotate to landscape screen format on a mobile phone or small tablet to use the **Mathway** widget, a free math problem solver that **answers your questions with step-by-step explanations**.

You can use the free Mathway calculator and problem solver below to practice Algebra or other math topics. Try the given examples, or type in your own problem and check your answer with the step-by-step explanations.

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