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Double Angle Calculator
Compute sin 2x, cos 2x and tan 2x from an angle x.
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sin 2x
Compare Your Options And Get Clear Answers
Compute sin 2x, cos 2x and tan 2x from an angle x.
Double Angle Estimator
Enter your numbers below for an instant estimate.
0
๐ก Tip: sin 2x = 2 sin x cos x.
How It Works
Key concepts behind this calculator
1
Enter Values
Fill in each field with your own numbers.
2
Calculate
Results update as you change the inputs.
3
Review
Read the breakdown and the explanation.
4
Adjust
Change values to compare scenarios.
Quick Reference Guide
Double Quick Guide
Typical values for reference.
| x | sin 2x | cos 2x | |
|---|---|---|---|
| 0 deg | 0.0000 | 1.0000 | |
| 30 deg | 0.8660 | 0.5000 | |
| 45 deg | 1.0000 | 0.0000 | |
| 60 deg | 0.8660 | -0.5000 | |
| Rule of Thumb | Check inputs | Use as a guide | Round sensibly |
Common Questions
Double Angle Calculator FAQ
Answers to common questions about this calculator.
Expressions for sin 2x, cos 2x and tan 2x in terms of x.
2 sin x cos x.
cos2 x – sin2 x.
Integration and identities.