# Week 18 Blog Post Top 5 things I have learned in Precalc 11

1：How to use Sine(two sides are known) and Cosine formula(three sides are known)

2: Arithmetic sequence was about common difference, while geometric was about common ratio

3: When being asked for angle,  we need to press shift on the calculator first

4: When  we simplify the radical, we need to find the greatest common denominator

5: When solving the equation, we need to check carefully and plug the answers into the primary formula because some of the answers does not fit the formula.

# Three Things Why I Never Want Jack As a Boyfriend

Jack plays an important role in novel “Lord of the flies”, he even became the chief of the group and got adored while his personifications does not deserve the title.

• ## Boring and tasteless relationship 🙁

In chapter three, Ralph was having an argument with Jack. He asked Jack to do some contribution but all Jack want was hunting. According to that, readers can see how boring Jack was. Wondering about this, if you are in relationship with someone, you wish days with him were memorable and make every moment count, however what your boyfriend got in his hand was only games, games and games like Jack only cares about hunting, hunting and hunting. He never prepares you a gift or surprise you on your anniversary, he does not like having to be responsible for the relationship, for himself, and for you. He doesn’t say this, but we can see it by how he acts.

• ## Arrogant 🙁

Jack’s most deadly killing part of personality would be arrogant. He never shows his patience to littileluns and treated pigs rudely. When the boy was a birthmark on his face first mentioned there was a beast on the island, Jack did not choose to deny but he admitted indirectly. He wanted to prove to the boys that he was brave and was not afraid of the beast at all.  Jack’s speech seems like a promise to the boys but was more like a destruction to their hope.

A boyfriend who is boring, lives a tasteless life; who is negative and always overconfident; who is arrogant and impatient to others, next step definitely would be game over, and break up.

# Week 17 blog post

The things i learned this week:

Cos= adja over hypo, Cos= x/r

Sin=oppo over hypo, sin=y/r