2 years ago

What is the true solution to In 20+ In 5= 2 In x? x=5. A X= 10 b X=50 c X= 100 d

Mathematics

1 answer:

lions [1.4K]2 years ago

4 0

ln(20) + ln(5) = 2 ln(x)

ln(20×5) = ln(x ²)

ln(100) = ln(x ²)

100 = x ²

x = 10

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Nataly [62]

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The inverse functions of sine, cos and tan functions are csc, sec and cot respectively.

Step-by-step explanation:

The reciprocals of sine, cos and tan functions are csc, sec and cot functions. The reciprocal of cosine function is secant, (sec) sec θ = $$\frac{1}{cos \theta}$

The inverse or reciprocal function is cosecant (csc), $$ csc \theta = \frac{1}{sin\theta}$

The inverse tangent function is cotangent (cot) , expressed in two ways: $$ cot\theta = \frac{1}{tan\theta}$ or $$ cot\theta = \frac{cos\theta}{sin \theta}$