Answer:
1) The angle would be 150 degrees
a) coordinates would be ( 
, 
)
b) Trigonometric ratios:
sin:
cos:
tan: 
csc: 2,
sec: 
cot: 
Explanation:
simplifys to 
which has a reference angle of 
. We can take the coordinates of and make the x value negative to find the correct coordiantes. Then, using those coordinates, plug the into the trigonomic equations.
For example, sin in opposite/hypotenuse. So sin = 1/2 divided by 1. Then you can find the rest of the equations that way.
cos= adjacent/hypotenuse
tan= sin/cos
csc= hypotenuse/opposite
sec= hypotenuse/adjacent
cot= cos/sin
I think the answer is B im sure correct me if im wrong.
Answer:
- 484 KJ/mol
Explanation:
The reaction equation is;
CH4(g) + F2 (g) ------> CH3F(g) + HF(g)
The enthalpy of the reaction can be calculated from bond energies using the formula;
ΔHreaction = Bond energy of reactants - bond energy of products
or
ΔHreaction = Bonds broken - bonds formed
[4(413) + 1(155) - 3(413) + 1(485) + 1(567)]
[(1652 + 155) - (1239 + 485 + 567)]
[1807 - 2291]
= - 484 KJ/mol
Explanation:
Ethics is a very important part in our daily lives. Ethics plays a vital role in a public speaking situation. An ethical public speaker should always be honest and should avoid plagiarism by taking his notes during the research process, identifying the sources, and ten deciding when it is suitable to cite the sources.
The ethical public speakers also also cite the sources properly by understanding how to paraphrase and then directly quote the sources.
In the context, if I lost the citation information for an important source for my speech, I will paraphrase the information and avoid plagiarism and as an ethical speaker I will mention that the abstract has been taken from an external source but the citation information was lost.
