SOLUTION: without using calculater note: pie=3.14 1.sin of pie /= divide 2.cos2 pie 3.tan

Question 798881: without using calculater note: pie=3.14
1.sin of pie /= divide
2.cos2 pie
3.tan pie/4
4.cot pie/3
5.sec3pie
6.cosec pie/6
7.sin3pie/4
8.cos5pie/6
Answer by KMST(5328) (Show Source): You can put this solution on YOUR website!
pi =
* = times sign
/ = divide
are commonly used.

Trigonometric functions of any angle can be expressed based on the same function of a reference angle in the first quadrant (between 0 and ).
It is a good idea to remember the values of sine, cosine (and maybe tangent) of 0, , , and , or to have some table or graph with those values handy.
Cotangent, secant and cosecant can be expressed as a function of tangent, cosine, and sine.
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