Posted by Matt on Monday, April 27, 2009 at 9:11pm.
for most of these you have to know your basic trig relationships
tanx = sinx/cosx ; cotx = cosx/sinx
cscx = 1/sinx ; secx = 1/cosx
sin2x + cos2x = 1
and its re-arrangements.
so for the first :
LS = cotOsinO
Most are this easy.
last one : (I will use x as my angle)
= (sinx/cosx + cosx/ sinx)/(sinx/cosx)
= (sin2x + cos2x)/(sinxcosx) x (cosx/sinx)
try the second one, it is even easier.
solve for x to the nearest thousandth: 2tan square x-5tan x-1
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