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#1 2016-02-11 14:21:15

Newman
Member
Registered: 2015-09-21
Posts: 42

one more plz

If sinθ = 3/5 and 0 ≤ θ ≤ pi/2, then tanθ = ??

Again, plz explain steps. Thank you!!

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#2 2016-02-11 14:49:30

evene
Member
Registered: 2015-10-18
Posts: 272

Re: one more plz

Go to here: http://www.mathisfunforum.com/viewtopic.php?id=22858

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#3 2016-02-11 16:07:40

Relentless
Member
Registered: 2015-12-15
Posts: 631

Re: one more plz

When sin(x) = y, one solution is x = sin^(-1)(y), also written asin(y)

You should be getting 3/4 when you have done it right

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#4 2016-02-11 18:06:01

Newman
Member
Registered: 2015-09-21
Posts: 42

Re: one more plz

thanks. for some reason, I wasn't putting together the fraction rel to sides of triangle. really appreciate it.

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#5 2016-02-11 19:32:00

Nehushtan
Member
Registered: 2013-03-09
Posts: 957

Re: one more plz


240 books currently added on Goodreads

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#6 2016-02-11 21:33:42

Monox D. I-Fly
Member
From: Indonesia
Registered: 2015-12-02
Posts: 2,000

Re: one more plz

Nehushtan wrote:

darn, why did I never think of that? All along this time, when I need to answer these kinds of questions, I need to draw the triangle first.


Actually I never watch Star Wars and not interested in it anyway, but I choose a Yoda card as my avatar in honor of our great friend bobbym who has passed away.
May his adventurous soul rest in peace at heaven.

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#7 2016-02-12 12:59:01

evene
Member
Registered: 2015-10-18
Posts: 272

Re: one more plz

I still like my "drawing the right triangle" method. It's easier!

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#8 2016-02-13 13:13:24

Monox D. I-Fly
Member
From: Indonesia
Registered: 2015-12-02
Posts: 2,000

Re: one more plz

evene wrote:

I still like my "drawing the right triangle" method. It's easier!

Now that I think about it, it is indeed faster to draw the triangle (unless it must be in exactly correct size) because we can think of the Pythagorean numbers spontaneusly rather than processing

.


Actually I never watch Star Wars and not interested in it anyway, but I choose a Yoda card as my avatar in honor of our great friend bobbym who has passed away.
May his adventurous soul rest in peace at heaven.

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#9 2016-02-14 05:02:16

evene
Member
Registered: 2015-10-18
Posts: 272

Re: one more plz

Well, in this case, it worked because 3 4 5 is a successful right triangle. But won't all the time if the triangle is not right.

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