So far from lesson #1 to lesson #6, we computed the trigonometric ratios of special angles.
We summarize the results here before we move on to more complicated topics.
By special angles, we mean 30 degrees, 45 degrees, and 60 degrees.
These are the angles from the 45-45-90 degrees triangle and the 30-60-90 degrees triangle
In lesson #1, we saw that tan(45 degrees) = 1
In lesson #2 and lesson #4, we saw that sin(45 degrees) = 1 / √(2) = √(2) / 2Aug 09, 16 01:40 PM
Average age of Dipu and Apu is 22 years. Average age of Dipu and Tipu is 24 years. Age of Dipu is 21 years. What are the ages of Apu, and tipu ? Let
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