Posted on

Week 17 in Pre-Calc 11

This week, we have learned trigonometry and I will discuss one of the things I learned: the Sine Law.


It’s a very useful to solve any triangle as long as you have:

  • an angle that has a side corresponding it.
  • two angles / two sides / one angle and one side.

Here’s how it works: every angle needs to be written in CAPITAL LETTERS and every side needs to be written in LOWER CASE LETTERS.

angle A corresponds with side a or side BC.

angle B corresponds with side b or side AC.

angle C corresponds with side c or side AB.


what’s the formula?

if you’re finding an angle…

\frac{sinA}{a} = \frac{sinB}{b} = \frac{sinC}{c}


and if you’re finding a side…

\frac{a}{sinA} = \frac{b}{sinB} = \frac{c}{sinC}


Posted on

Nuclear Power Debate

As concerns about environment and power usage has grown, usage of nuclear power has become a controversy to many countries. Many debate to use it as continuing to use fossil fuels greatly harms our environment, and many debate not to use it as they are worried about the radiation and economic meltdown in the future as building a nuclear power plant costs billions.


My stance on this long debate is anti-nuclear. Firstly, the effects of radiation poisoning from the nuclear accidents, like the one in Chernobyl, was devastating. Other than that, the waste materials they produce emits radiation for thousands of years. And being exposed to radiation isn’t good either as we can see from the effects it brought to countries like Japan that had nuclear accidents before. For example, they couldn’t eat much food because some livestock got radiation poisoning and it can get transmitted to people if they eat them.

Also, although the power plants aren’t “emitting carbon,” the way they get their fuel, or uranium isn’t CO2-free either. In fact, uranium mines inevitably pollute our environment. Wastes they produce are very radioactive and high in temperature, harming our environment.

Furthermore, using nuclear power plants are very costly and can cost until $9 billion, and can take a long time to build. Another disadvantage is that there are finite resources that they can use and they don’t work forever. So they have to make another one again after so many years.

Other than those, having access to nuclear power is very dangerous as there are terrorist groups existing today and if they can get the information, it can get dangerous for the people as they can have nuclear power and make nuclear weapons that they can threaten the world with.