Posted by Matt on Monday, April 27, 2009 at 9:11pm.
I do not understand these problems. :S
I'd really appreciate the help.
Use trigonometric identities to transform the left side of the equation into the right side.
cot O sin O = cos O
sin^2 O - cos^2O = 2sin^2 O -1
(tan O + cot O)/tan O = csc^2 O
- trig - Reiny, Monday, April 27, 2009 at 9:31pm
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.
- trig - Steve Madden, Tuesday, April 20, 2010 at 4:04pm
solve for x to the nearest thousandth: 2tan square x-5tan x-1
Answer this Question
- Trigonometry - How am I suppose to transform the left side of the equation into ...
- Trig - The question is: Set up a 2 column proof to show that each of the ...
- Math(Please help) - use trigonometric identities to transform one side of the ...
- Trigonometry - I need help proving trigonometric identities. Most of my ...
- Simplifying with Trigonometry Identities - Hi, I am a senior in High School ...
- Trigonometry - Hello all, In our math class, we are practicing the trigonometric...
- trig - it says to verify the following identity, working only on one side: cotx+...
- Trigonometry - I don't understand how I'm supposed set the problem up or what ...
- verifying trigonometric identities - How do I do these problems? Verify the ...
- Trigonometry - Proofs - Prove that the average of the numbers n sin (n degrees...