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C3 and C4 trig makes no sense o.o

Ok, I'm literally in tears right now ;-; I don't get ANY of the trig involved in C3 and C4, I'm failing SO bad, I don't know where to start, anyone in the same position/any advice?

Anything will be much appreciated D:
It's normal to be "failing so bad"...
But you shouldn't be "literally in tears"...

is it only the trig in C3 and C4 that is bothering you?
But I don't wonna fail my A2s ;-;

Yes, trig is linked to almost all the topics (integration, differentiation etc.) so i can't do the questions that intercalate trig functions and identities D:<
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Pride
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Got any examples? Someone'll go through them with you on this forum.

Also, most importantly - tell your teachers! This is really important to you passing/coming away with the grade you want. Try not to panic, take practical steps. Email your teachers, speak to them before/after class about it. Accept as much of their help as possible. Be specific about what you're not getting.

If you're struggling, I'm sure others are too, and would appreciate more help.
If you remember this:

Sin^x + cos^x=1

Sinx/cosx=tanx

Sin2A= 2SinACosA

Cos2A= Cos^A - Sin^A

You'll be able to do pretty much everything

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