Tutor profile: Jatel D.
Subject: SQL Programming
Write a query to find all the red apples from the table Fruit and Farm, without repeats. Use color for your key.
SELECT distinct Apple, Color from Fruit fr, Farm fa WHERE fr.color = fa.color AND Apple = red;
Find the exact value of arcsin(-sqrt(3/2)), using the theorem that y = arcsin x is equivalent to sin y = x with -1 ≤ x ≤ 1 and - π / 2 ≤ y ≤ π / 2
Let y = arcsin(- √3 / 2). According to theorem above, this is equivalent to sin y = - √3 / 2 , with - π / 2 ≤ y ≤ π / 2. From table of special angles sin (π /3) = √3 / 2. We also know that sin(-x) = - sin x. So sin(- π / 3) = - √3 / 2.Comparing the last expression with the equation sin y = - √3 / 2, we conclude that y = - π / 3.
How would you respond when someone asks: "What's the weather like today?"
The weather is a little cloudy.
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