<u>Given</u>:
Given that we need to prove the identity 
<u>Proof</u>:
Step 1: Factor out the common term sin x, we get;

Step 2: Using the identity 

Step 3: Reciprocating sec x, we get;

Step 4: Splitting the denominator, we have;

Simplifying, we get;

Thus, the identity is proved.
Answer:
y = (-5/3)x - 5
Step-by-step explanation:
5x + 3y = =15
slope intercept for is: y = mx + b
3y = -5x=15
divide both sides by 3:
y = (-5/3)x - 5
The difference between Area and Volume lies in the fact that the former relates to plane shapes while the latter takes the concept of solid shapes into account.
<h3>What is the difference between Area and Volume?</h3>
The distinctive characteristic of area is the space occupied by a two-dimensional, 2D flat object in a plane while Volume on the other hand is defined as the space covered by a three-dimensional, solid object. The area is quantised in square units while the volume is quantised in cubic units.
Read more on area and volume;
brainly.com/question/1972490
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A triangle that has an angle that measures 90 degrees would be a Right Triangle.