how do you do trigonometry?

Shane

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Answers

help?!?!

charlieellis

07 May 2012

That's a very broad question, is there anything you're particularly struggling with?

joannarodwell

07 May 2012

how to work out the angle on a right angled triangle when you know to of the lengths of the triangle

charlieellis

07 May 2012

It all depends on which sides of the triangle you have and which angle you are trying to work out. Do you have a length for the hypotenuse (the longest side of the triangle?).

joannarodwell

07 May 2012

For trigonometry like this, you can use SOH CAH TOA (and pretend you are a ninja whilst saying it...). SOH = SinA = length of the opposite side to the angle / length of the hypotenuse

joannarodwell

07 May 2012

6cm

charlieellis

07 May 2012

CAH = CosA = length of the adjacent side to the angle / length of hypotenuse

joannarodwell

07 May 2012

TOA = TanA = length of the opposite side to the angle / length of the adjacent side to the angle

joannarodwell

07 May 2012

wait it has changed to 5cm

charlieellis

07 May 2012

Then when you have SinA or CosA or TanA, you can use your scientific calculator to get the angle by pressing 2nd function and Sin-1 / Cos-1 / Tan -1

joannarodwell

07 May 2012

i still don't get any of this

charlieellis

07 May 2012

This is Charlie's dad. It's clear that he does not undertand this. He would like to get some online tutoring. He cant do it now, but can do tomorrow. He will send you a private message via Tutorhub.

charlieellis

07 May 2012

Okay, I will do my best to help out.

joannarodwell

07 May 2012

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