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Mathematics 18 Online
kaydademon:

ss below

kaydademon:

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kaydademon:

@smokeybrown @xxemilianaxx

xxemilianaxx:

Hello again lol, Triangle ABC is a right triangle with its right angle at B. Thus, AC is the hypotenuse of right triangle ABC, AB and BC are the roots of right triangle ABC. What's the the Pythagorean theorem again?

kaydademon:

AB=√202−162=√400−256=√144=12

xxemilianaxx:

Ah right, Triangle DEF is similar to triangle ABC, with vertex F to vertex C. The measure of angle ∠F equals the measure of angle ∠C. Therefore, sinF = sinC. Going to the side lengths of triangle ABC what do you get?

kaydademon:

wait the side lengths of abc?

xxemilianaxx:

Yes

kaydademon:

sinF= opposite side / hypotenuse = ab / ac = -12/ 20 = 3/ 5

xxemilianaxx:

Check that again you got your negative/positives confused again lol

kaydademon:

the -12/ 20 = 3/ 5 part

xxemilianaxx:

Yeh

kaydademon:

ohh its -12/20 = 3 / 5 right?

xxemilianaxx:

You did the negative again😂

kaydademon:

12/20

xxemilianaxx:

Yes, So what does sinF equal

kaydademon:

3/5

xxemilianaxx:

Decimal or fraction?

kaydademon:

It says both

xxemilianaxx:

So what's 3/5 as a decimal

kaydademon:

0.6

xxemilianaxx:

Correct

kaydademon:

tank youu

xxemilianaxx:

Np!

kaydademon:

i got 0.6

kaydademon:

3/5

Florisalreadytaken:

oh nevermind i just realised

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