SOLUTION: 6. true or false: it is not possible to find the exact value of sin75? if fals efind exact value

Question 174439: 6. true or false: it is not possible to find the exact value of sin75? if fals efind exact value
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
False. It is possible to find the exact value of sin(75), and here's how:

First, break up 75 into 45+30 (which are known angles on the unit circle)

Remember,

So this means that

Evaluate each trig function (by use of the unit circle)

Multiply

Combine the fractions.

So the exact value of sin(75) is
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