Since <span><span>secx</span>=<span>1<span>cosx</span></span></span>,
the first member becomes
<span><span><span><span>1<span>cosx</span></span>−1</span><span>1−<span>cosx</span></span></span>=<span><span><span>1−<span>cosx</span></span><span>cosx</span></span><span>1−<span>cosx</span></span></span>=<span>1<span>cosx</span></span>=<span>secx</span></span>.
Answer:

Step-by-step explanation:
<u>Step 1: Solve for n</u>
<u />


<u>Step 2: Choose 3 values</u>
<u />

Answer: 
Answer:
Perimeter = 36.8 ft
Step-by-step explanation:
<u>Step 1: Add the straight sides together</u>
3+3+3+3+3+3 = 18 ft
<u>Step 2: Find the perimeter of the semi-circles</u>
The formula for the perimeter of semi-circle: 1/2 π × d
Diameter = 12 - 3 - 3 = 6, because the whole length is 12 minus the 6 ft of other stuff.
Now, 1/2π * 6 = 9.4 ft
But, there are two semi-circles so it will be 9.4 + 9.4 = 18.8 ft
<u>Step 3: Add all of them</u>
18 + 18.8 = 36.8 ft
2x+7=3
move 7 to the other side
sign changes from +7 to -7
2x+7-7= 3-7
2x= 3-7
2x= -4
divide both sides by 2 to get x by itself
2x/2= -4/2
answer:
x= -2
Answer:
<em> 50° </em>
Step-by-step explanation:
x° = 180° - (102° + 28°) =<em> 50°</em>