SOLUTION: i m not sure which formula i used can u solve this for me and tell me the formula please. using formulas evalute a. sin 11π/12 b. tan [-5π/12]

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Question 194699: i m not sure which formula i used can u solve this for me and tell me the formula please.
using formulas evalute
a. sin 11π/12
b. tan [-5π/12]

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
i m not sure which formula i used can u solve this for me and tell me the formula please.
using formulas evalute
a. sin 11π/12
b. tan [-5π/12]
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These are just trig functions in radians.
You can convert the angles to degrees by multiplying by 180/pi.
a. sin 11π/12
= sin(165º)
= ~ 0.9977973
-----------
b. tan [-5π/12]
= tan(-75º)
= ~ 0.4207
-------------
Is that what you need? If that's not sufficient, email me via the thank you note.