Answer:
see explanation
Step-by-step explanation:
Using the cofunction identities
tan(90 - A) = cotA and cscA = sec(90- A)
Consider the left side
tanA + tan(90 - A)
= tanA + cotA
= 
+ 
= 
= 
= 
× 
= secA × cscA
= secA. sec(90 - A) = right side ⇒ verified
Answer:
17. 49
18. 62
Step-by-step explanation:
alright so all u gotta know here is that all triangles add up to 180 degrees
17. 50+83= 133
180-133= 49 degrees
18. 44+74= 118
180-118 = 62 degrees
The stratified method is a method of sampling from a population that can be divide in subgroups called subpopulations. Following this definition, the first choice would be an example of stratified method since each classe would represent a subpopulation.
The cluster method is a method of sampling which consists in dividing the population into clusters to then choose one cluster randomly to carry out the study. The second choice would be an example of this sampling method since they made up 4 different classes of students to then select a random sample.
The random method is a method of sampling which consits in
That could use some punctuation.
I think the expression is
42 + 2c
We call 42 and 2c the terms, 42 is the constant or the constant term, 2c is the linear term, with a coefficient of 2 and variable c.
Answer: 2
