SOLUTION: Determine the exact value of each of the following and what quadrant they are in,
a) tan(-210 degrees)
b) Sin 300 degrees
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Question 1165906: Determine the exact value of each of the following and what quadrant they are in,
a) tan(-210 degrees)
b) Sin 300 degrees
Found 2 solutions by josgarithmetic, MathLover1:
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
----------------
Sin 300 degrees
----------------
Refer to Unit Circle.
See that 300 degrees is 60 degrees less than 360 degrees. This is like +60 degrees, but the sign is negative. Instead of for sine, it is ; and is in quadrant 4.
Answer by MathLover1(20850) (Show Source): You can put this solution on YOUR website!
a)
Use the following property :
....since
=>
b)
degrees
Use the following property :
=> =>
then
and
Using the summation identity :
since
we have
=>
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