True because rational numbers are countable, but the irrational numbers are uncountable.
Answer:
θ = -33.69°
Step-by-step explanation:
For Φ>0 and Φ<0 (in general Φ≠nπ where n is an integer), sin(Φ) ≠ 0
Dividing both equations:

Therefore:
arctan(θ) = -2/3
θ = -33.69°
The answer does not depend on the sign of Φ, in fact we just need that the sine does not become zero, which occurs when Φ is equal to an integer times π (radians) or 180 (degrees)
Have a nice day!
Answer:
is 20 is your answer I believe
Step-by-step explanation:

Given expression is

can be re-arranged as


On rationalizing the denominator, we get

We know,

So, using this, we get






On rationalizing the denominator, we get




Hence,

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