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Trigger
Trigger fosters a deeper understanding of trigonometry by building your geometric intuition.
The dynamic, touchable "Complete Triangle" figure interprets the six standard trig values associated with an angle as lengths of segments. As the angle changes, segments shrink to nothingness or stretch out to infinity, making the nature of individual values clear; segments also combine to form numerous similar right triangles, revealing many relationships among the values as simple geometric properties. Dual calculator displays allow for exploring these relationships numerically.
For information on the Complete Triangle figure, see the document "(Almost) Everything You Need to Remember about Trig, in One Simple Diagram", available at the developer's website.
What's new
◬ Fixed a crash-at-launch bug under iOS4
◬ Fractional degrees: When swiping to control the length of a segment in the figure, the degrees indicator displays the size of the angle to two-decimal-place accuracy, providing better feedback on the behavior of the inverse trig functions.
◬ Tangent and Cotangent now "swipable" in the figure.
◬ Relative Swiping: When swiping to control the length of a segment in the figure, that length no longer depends upon where your finger *is*, but how far it has *moved*. Now you can make swipe and swipe and swipe to make (co)secant and (co)tangent larger and larger and larger.
◬ "Swiping affects figure in opposing quadrant" behavior removed. ("Relative swiping" makes it unnecessary.)
◬ Shake to switch numerical display between trig values and calculators
◬ Updated icon and graphics for iPhone 4's Retina Display
◬ In-app mail for Feedback and Error Reports
◬ (1.1.1) Fixed reversed(?!) icon on iPad.
◬ (1.1.1) Fixed a couple of minor display bugs.
Screenshots
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- Last changed:
- Aug 31, 2010
- Category:
- Education
- Developer:
- Tricochet
- Version:
- 1.1.1
- Average Rating:
- 3.50 (24)
- Size:
- 0.8 MB
