Asked by Anonymous
1. Find the exact value of the expression.
cos pi/16 * cos 3pi/16 - sin pi/16 * sin 3pi/16
My ans: sqrt2/2
2. Find the exact value of the sin of the angle.
17pi/12 = 7pi/6 + pi/4
My ans: (sqrt2 - sqrt6)/4
cos pi/16 * cos 3pi/16 - sin pi/16 * sin 3pi/16
My ans: sqrt2/2
2. Find the exact value of the sin of the angle.
17pi/12 = 7pi/6 + pi/4
My ans: (sqrt2 - sqrt6)/4
Answers
Answered by
Steve
Hmmm. I get
-(√2+√6)/4
Better check your +- signs.
-(√2+√6)/4
Better check your +- signs.
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