There are mainly six trigonometric functions for right angle triangle which are
- sinФ
- cosФ
- tanФ
- cosecФ
- secФ
- cotФ
All of these can be expressed in the form of sinФ and cosФ as following:
- sinФ = sinФ
- cosФ = cosФ
- tanФ = sinФ/cosФ
- cosecФ = 1/sinФ
- secФ = 1/cosФ
- cotФ = cosФ/sinФ
This angle Ф is shown in the attached drawing in a right angle triangle drawn within a circle which is the given angle. Right angle is mentioned as "90".
Answer:

Step-by-step explanation:
By definition, a relation is a function if and only if each input value have one and only one output value.
The input values are the x-values and the output values are the y-values.
Given the function f(x):

You need to substitute
into this function:

And now you must evaluate in order to find the corresponding output value.
You get:

The function g(x) is:

Then, you need to substitute
in the function:

And finally you must evaluate in order to find the corresponding output value. This is:

Answer:
4
Step-by-step explanation:
total no. of girls James have = 2
total no. of girls Jennie have = 2
Now,
total no. of girls both have
= 2 + 2 = 4
Area of a quarter circle = 1/4 * pi * r^2
= 1/4 * pi * 4^2 = 12.6 m to 3 sig figs.
perimeter = 4 + 4 + 1/4 * 2 pi * 4 = 14.3 to 3 sig figs.