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3 years ago

If cos ∅ lies in the quadrant IV, what can be the value of cos ∅?

Mathematics

2 answers:

Murljashka [212]3 years ago

3 0

Answer:

3/5

Step-by-step explanation:

The range of the cosine function is [-1, 1]. Since √41/5 is greater than 1, we eliminate answers a) and b) immediately.

If this angle lies in Quadrant IV, the "adjacent side" is positive. Thus, the cosine of this angle must be 3/5.

OlgaM077 [116]3 years ago

3 0

D is the correct answer

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Answer:

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Given:

The expression is:

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To find:

The integration of the given expression.

Solution:

We need to find the integration of $\dfrac{1-\cos 2x}{1+\cos 2x}$ .

Let us consider,

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It can be written as:

$I=\int (\sec^2x-1)dx$ $[\because 1+\tan^2 \theta =\sec^2 \theta]$

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Step-by-step explanation:

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2 years ago

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So n(A) = 2001

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n-m+1

where,
m = starting value
n = ending value

In this case,
m = 0
n = 2000
So,
n-m+1 = 2000-0+1 = 2001

This formula only works if we increase the number by 1 each time (eg: 6, 7, 8, etc)

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3 years ago