Trigonometric equations

These videos are about solving trigonometric equations. To do this, you have to know the basic trigonometric identities. The process is very long and complex, and can be very difficult to do if you don't know the identities. It's interesting how you need to remember all the past topics we've seen along our two previous semesters, such as the general formula. I liked the woman's video because she explained it clearly and very happily. In conclusion, I feel this topic is kind of complex. 

Topic 6

Trigonometric identities are the expressions of equality where trigonometric functions are involved, like sine, cosine, tangent, secant, cosecant and contangent. They help to formulate a function of many ways through simplifying the formulas included in this functions

The reciprocal identities vary from each trigonometric

functions:

Sin(a)=1/Csc(a)

Cos(a)=  1/Sec(a)

Tan(a)= 1/Cot(a)

Csa(a)= 1/Sin(a)

Sec(a)= 1/Cos(a)

Cot(a)= 1/Tan(a)

The quotient identities are:

We can know the pythagorean identities through the

Pythagoras theorem.

(sin(a))²+(cos(a))²= 1  so Sin²a+Cos²a=1