Answer:

Step-by-step explanation:
Given

Required
Use the expression to prove a trigonometry identity
The given expression is not complete until it is written as:

Going by the Pythagoras theorem, we can assume the following.
- a = Opposite
- b = Adjacent
- r = Hypothenuse
So, we have:


Having said that:
The expression can be further simplified as:

Substitute values for sin and cos
becomes

Answer:
30 students are absent.
Step-by-step explanation:
5%=0.05
0.05*600=30
Answer:
Step-by-step explanation:
2x²-13x+21+6x²+29x-5
=8x²+16x+16
A dependent variable depends on an independent variable