WikiCards · Card list · Science cards · Tangent half-angle formula
Uncommon card · Science
Tangent half-angle formula, an Uncommon card
In trigonometry, tangent half-angle formulas relate the tangent of half of an angle to trigonometric functions of the entire angle.
- Rarity
- Uncommon
- Domain
- Science
- ATK
- 57
- DEF
- 30
- Power
- 87
- Wikipedia reads a year
- 17,000
Power 87 (ATK + DEF): stronger than 30 % of WikiCards cards.
The facts on the card
The card carries these facts from its Wikipedia article.
- In trigonometry, tangent half-angle formulas relate the tangent of half of an angle to trigonometric functions of the entire angle.
Why it is Uncommon
Rarity in WikiCards follows a year of Wikipedia page views: the most read articles become Epic and Legendary cards. The Tangent half-angle formula article was read about 17,000 times in a year. ATK comes from the length of the article and DEF from its quality, so this card hits with 57 and blocks with 30: each hit it takes is cut by 12 %.
How to get Tangent half-angle formula
Open packs. Each pack holds five cards drawn from real Wikipedia articles, the rarest last, and the fifth card is always Rare or better. The odds are shown in the game. A free pack arrives every hour and two can wait, and the Coins you win in duels buy more packs.
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Card lists
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Credits
Text : Wikipedia, Tangent half-angle formula (revision), CC BY-SA 4.0. Photo : Chasetaylor1, CC BY-SA 3.0, Wikimedia Commons.

