Chapter One

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Chapter One
Solving Oblique Triangle Using The Laws Of Sine and Cosine

In our class in Trigonometry, we were about to learn solving oblique triangles using the laws of sine and cosine.

Solving Oblique Triangle Using The laws of Sine and Cosine

*Laws of Sine — the side of any triangles are proportional to the side of their opposite angle.

    Formula:
                         a       =     b      =     c    
                      Sin A      Sin B      Sin C
  

    For Cases:
     Case I — two angles and a side given

     Case II — two sides and an opposite angle given

*Laws of Cosine — square of any triangle is equal to the sum of the square of the two other sides minus twice the product of these sides and the cosine of their included angle.

    Formula:
             a² = b² + c² – 2bc Cos A
             b² = a² + c² – 2ac Cos B

             c² = a² + b² – 2ab Cos C

    For Cases:

     Case III — two sides and an included angle given

     Case IV — all sides given

*Sum of the three angles are 180°.

    Formula:
                      A + B + C = 180°

In my own version of solving oblique circumstances with the laws; two people with same goal—that's case one. Case two—two people with different goals. Case three—two people with same goal but there's one to fall. Lastly, case four—both people with same goal and fall, meaning they're equally the same. They both fall at the same time, place, moment.

The sum of both people with same goal is equal to the other's fall(the one to fall). Formula: I + You + same goal = the things beginning to fall.

These things are my version of Solving  Oblique Circumstances Using The Laws of Sign and Cosign In Life Learning Between Friendship and Love.

∞∞∞

November 14
11:45 pm, Tuesday

At lunch, I ate with Jeanie and Charlie. Jeanie is my best friend ever since we're two while Charlie has been my best friend when middle school came. We really had a tight and strong bond of friendship together. I just no longer don't know. We still sit together on one table but I felt strange. We no longer talk or communicate the way we used to. We just finished our food then after bid our goodbyes to each other. We no longer hug each other or beam at one particular person, or situatiqon, in chorus.

Only Charlie talks when we were eating—whenever Jeanie talks she's only looking at her, earlier that happened. I didn't even know what did I do. Had I done something that had gotten her to avoid me?

∞∞∞

Date: 14th of November
Title Entry: Seara's Diary

     Jeanie is avoiding me ever since            lunchtime

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     Jeanie is avoiding me ever since      
     lunchtime. Charlie, I could
     sense that she felt awkward
     around, and couldn't stand in a
     pack of silence that's why she
     always talk. She's a blabber.
     Jeanie's my best friend since
     we're two. She's the best. I
     love her. Jeanie.
                                         – S. Breva

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⏰ Last updated: Feb 02, 2017 ⏰

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