Hello, I just started this topic and is already struggling with a few questions, that I need help kindly need help with, as I am unable to get the correct answer.
Question 1) Find the exact value of the following:
I thought the method to this was to subtract it with the nearest degree.
Therefore being 270=315-270
And according to the table I was given cos 45 is √2/2.
However the answer is 1/√2
I thought the answer would be 270(nearest)-240=30
However the answer is -√3/2
Can you please explain how they get this answer. Thanks