the equation is - tan2 x + sec2 x = 1.
Left hand side identity : - tan2 x + sec2 x.
Trigonometric function : tan x = sin x / cos x,
Reciprocal identity : sec x = 1/cos x.
- tan2 x + sec2 x = - (sin x/cos x)2 + (1/cos x)2
= - sin2 x/cos2 x + 1/cos2 x
= (1 - sin2 x)/cos2 x
Pythagorean identity : sin2 x + cos2 x = 1 .
= cos2 x / cos2 x
= 1
Answer:
1440
Step-by-step explanation:
How one of my teachers said is 72 time 40 is 2880
and then 2880 divided by 2 is 1440. This is what my teacher said so I don’t know.
Compound interest formula:
Amount = starting value x ( 1+ interest rate/compounds per year)^(compound per year x number of years)
Amount = 12,000,000 x (1+ 0.10/1)^(1x5)
Amount = 19,326,120.00
First you have to get the equation into slope/intercept format: y = mx + b

So the slope m = 2, and the y-intercept b = -1.
b tells you where the line intersects the y axis. The slope is rise (vertical distance) over run (horizontal distance). I have attached my best attempt at drawing this without graph paper. The dotted line represents the inequality, and the solution set includes the values above the line which is why it is shaded. Hope this helps!