**Pi on blackboard image from Pixabay 😀**

### From May 24 to 31 last month, I held a 7-day Math mini-contest for D.Buzz featuring **trigonometry** problems! 😎

The rules were posted at /@savvyplayer/official-rules-for-my-week-617eb96796fcb.

For the entirety of the Math mini-contest, there had been only **one** participant - @minus-pi. ☝️ The people who could have been participants might either be too busy during the week, found trigonometry problems too difficult for them, or found the contest rules to be too complicated for them. 🤔 Whatever reasons they might have had for not joining would not be known, unless they gave their feedback for my mini-contest. 🤔🤔 I thought that posting my mini-contest rules and daily solutions on the #StemGeeks community would have promoted engagement, but I might be missing something. 😐

As planned, the challenge problems themselves had a maximum of 280 characters (including the post title) and posted on the D.Buzz community to help promote engagement within that community. 🙂

Listed below are the Math problems I asked, together with their answers. Each problem-answer pair is hyperlinked to their corresponding posts visible on the #StemGeeks community (the challenge problems themselves were posted on the D.Buzz community). 👇

Day | Problem | Answer | Winner |
---|---|---|---|

Day 1 | Manuel found that cos (2θ) = -7 and θ is not in the first quadrant. To remember it more easily, he wants to convert cos (2θ) into sin (θ). What is the value of sin (θ)? | no solution | @minus-pi |

Day 2 | A calculator of Ahmad can perform only the sine function in trigonometry. The arc tangent value of an angle is 30.26°. What is the sine value of the angle? | no solution | none |

Day 3 | Triangle ABC has C as the right angle. Fang recalls that the value of sin A has a numerator of 15. Manga remembered that the value of sin A is less than the value of cos A. What is the value of cos A? | √(2)/2 < cos A < 1 | @minus-pi |

Day 4 | Vision knew that the value of tan (2A), where A is one of the acute angles of a right triangle with integer sides, has a value of approximately 1.0084. What is the minimum possible area of the triangle? | 30 square units | none |

Day 5 | For a triangle DEF whose height is FG and G is on side DE, Manga got arctan (FG/DG) ≈ 1.176, while Minos got arctan (FG/GE) ≈ 0.330. What is the minimum possible area of the triangle if FG is an integer? | 8.6863 square units | none |

Day 6 | Holovision needs to design a 50-sided regular polygon for his new holographic project. Given any four consecutive vertices EFGH, the distance of E from H is 36 centimeters. What is the area of the polygon? | 28,914 cm² | @minus-pi |

Day 7 | Triangle FAN is circumscribed in a circle G. Fang already solved for the following in the circle: NG measures 4 meters, FN measures 5 meters, and AN measures 6 meters. What should Fang's answer regarding the measure of arc FA be? | 12.19 meters | @minus-pi |

### Thanks to the supporters and the **only** participant! 😁

@minus-pi got the correct answer for 5 of the daily problems! 🏅🏅🏅🏅🏅 Since he had been the only participant for that month and won at least once, he got the entire prize pool of 7 HIVE for the contest. 💰💰💰💰💰💰💰

Participants for last month's Math mini-contest: @jfang003, @ahmadmanga (@ahmadmangazap), @eturnerx (@eturnerx-dbuzz), and @dkmathstats 👋

Special mentions: @dbuzz, @chrisrice, @jancharlest, and @mehmetfix 🤯

@holovision did *not* participate in my Math mini-contest for the last 2 months. 👋👋 His username was featured on 2 of my problems for the month's Math mini-contest. 😄