Saturday

August 30, 2014

August 30, 2014

Posted by **MELEK** on Monday, February 27, 2012 at 10:05pm.

answers

sec 13pi/4=? =>-(2)

csc 13pi/4=? =>-(2)

sec (-pi/6)=? =>2(3)/3

- PRE-CAL -
**Damon**, Monday, February 27, 2012 at 11:01pm13/4 = 3 1/4 = 2 + 1 1/4

so twice around + pi + pi/4

which is

45 degrees below -x axis

cos 5 pi/4 = -1/sqrt 2 so sec 5 pi/4 = -sqrt 2

the others are similar

Just remember once all the way around is 2 pi and halfway around is pi

**Related Questions**

Pre Cal - Vertify the identities, clearly show each step (vertify one side that ...

Pre Cal - Vertify the identities, clearly show each step (vertify one side that ...

pre cal - can someone please show me how to verify this identity? (sec x/csc x ...

Pre Calculus. - Can someone check my answers please!!! Simplify (tan ^2 theta ...

Pre cal - Sec^2x=2 With 10 different answers

trig - If sinx = -3/5, tan x > 0, sec y = -13/5 and cot y < 0, find the ...

Confused! Pre-Cal - Verify that each equation is an identity.. tan A= sec a/csca...

inverse trig functions - evaluate the following expressions: tan(sec^-1(5/3)) ...

Pre-Cal - I'm trying to do this identities homework and i can't figure this one ...

Math - Given that cos 13pi/18=sin y, first express 13pi/18 as a sum of pi/2 and ...