SOLUTION: Please help!
What is the exact value of the expression sin(-5)3.14/4
A. -1/2
B. -1
C. radical of 2/(2)
D. radical of 3/(2)
Algebra ->
Trigonometry-basics
-> SOLUTION: Please help!
What is the exact value of the expression sin(-5)3.14/4
A. -1/2
B. -1
C. radical of 2/(2)
D. radical of 3/(2)
Log On
Question 941308: Please help!
What is the exact value of the expression sin(-5)3.14/4
A. -1/2
B. -1
C. radical of 2/(2)
D. radical of 3/(2) Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! What is the exact value of the expression sin(-5)3.14/4
Your Problem:: sin[(-5/4)pi] = sin[(-5/4)pi + 2pi] = sin[(3/4)pi] = sqrt(2)/2
====================
Cheers,
Stan H.
----------------
A. -1/2
B. -1
C. radical of 2/(2)
D. radical of 3/(2)