Introduction to proving Trig identities
Sorry for not being able to upload my video on Monday.
Now today's topic is Trig identities. Is you watch my video on topics you need to know in Calculus, the first topic i mentioned was Trig Identities.
Now lets start, trigonometry is study of sides and angles of a triangle.
We have three trig ratios namely:
Sine
Cosine
Tangent.
To remember them easily we use a mnemonic SOHCAHTOA
Sinx=opp/hyp
cosx=adj/hyp
tanx=opp/adj

Proving of Trig Identities.
Applying Pythagoras theorem,
x²+y²=r²
(rcosx)²+(rsinx)²=r²
r²cos²x+r²sin²x=r²... continue reading at www.scienceteachinglair..com.
Remember your strength in Calculus is determined by your strength in Trig identities.
You can also check out my video on this topic

https://www.youtube.com/watch?v=jyqShm8f8hk