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Mathematics 7 Online
MiraAngel:

Just confused on a little part of my question...

MiraAngel:

Confused on this little part... that's all. How do they get from there... to there????

1 attachment
MiraAngel:

anywayyyyyyyy....

Timmyspu:

ok so what is the fist step that u have to do

MiraAngel:

It's just the last part. I don't know how they got from the first part to the second part...

darkknight:

Just the last part? the part that you put in a question mark?

MiraAngel:

\(\color{#0cbb34}{\text{Originally Posted by}}\) @darkknight Just the last part? the part that you put in a question mark? \(\color{#0cbb34}{\text{End of Quote}}\) yes

Timmyspu:

so they took the greatest common denominator and divided the top and bottom number to get the answer

Timmyspu:

does that help @MiraAngel

Teal:

>:-D

darkknight:

This part? \[\cos^2\theta=225/189\] \[\cos(\theta)=15/17\] So basically what happens here is that 225/189 is square rooted, basically how if you square root 9/4 and you get 3/2, the same way cos^2(theta) is square rooted to get cos(theta)

MiraAngel:

\(\color{#0cbb34}{\text{Originally Posted by}}\) @Timmyspu does that help @MiraAngel \(\color{#0cbb34}{\text{End of Quote}}\) Yes. Thank you.

MiraAngel:

\(\color{#0cbb34}{\text{Originally Posted by}}\) @darkknight This part? \[\cos^2\theta=225/189\] \[\cos(\theta)=15/17\] So basically what happens here is that 225/189 is square rooted, basically how if you square root 9/4 and you get 3/2, the same way cos^2(theta) is square rooted to get cos(theta) \(\color{#0cbb34}{\text{End of Quote}}\) Great! Thank you!

jhonyy9:

@darkknight 17^2 = 289 not 189

jhonyy9:

ok pls correct it

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