3 years ago

Answer For Brainliest

Mathematics

1 answer:

liq [111]3 years ago

8 0

Answer:

the answer is D

Step-by-step explanation:

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Prove : (sec θ - tan θ )^2 = 1 - sin θ /1+sin θ

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$(sec x - tan x)^2 \\ \\ = sec^2x - 2 sec x tan x + tan^2 x \\ \\ =(1+tan^2 x) - 2 sec x tan x +tan^2 x \\ \\ =1 - 2 sec x tan x + 2 tan^2 x \\ \\ = 1 - 2tan x(sec x - tan x) \\ \\ =1 - \frac{2 sin x}{cos x} (\frac{1-sin x}{cos x}) \\ \\ = 1 - \frac{2 sin x (1-sin x)}{cos^2 x} \\ \\ =1 - \frac{2 sin x (1-sin x)}{1-sin^2 x} \\ \\ =1 - \frac{2 sin x (1-sin x)}{(1-sin x)(1+sin x)} \\ \\ =1-\frac{2 sin x}{1+sin x}$

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2 years ago

2. How many solutions does the below system of equations have?

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??

Therefore, there is no solution.

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3 years ago

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A truck driver is going down a one way street the wrong way, and passes at least ten cops. Why is he not caught?

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