Trig identitiy simplification (1 Viewer)

[mtsmahia]

Sry...for asking another Q
but can anyone

please help in simplifying CodeCogsEqn(5).gif

thanks once again

 

[shuning]

回复: Trig identitiy simplification

= cos^2 (180 - @)

and keep on going LOL xD

 

[mtsmahia]

Re: 回复: Trig identitiy simplification

= cos (180 - @)

and keep on going LOL xD

but the answer is cos^2@

 

[philly2000]

Re: 回复: Trig identitiy simplification

1-sin^2 (180-@)
= cos^2 (180-@)
= (-cos@)(-cos@)
=cos^2 (@)

 

[shuning]

回复: Re: 回复: Trig identitiy simplification

but the answer is cos^2@

oh shit sorry man i left the ^2 out for u T.T

 

[rocktheyard]

Re: 回复: Trig identitiy simplification

.

 

[shuning]

回复: Re: 回复: Trig identitiy simplification

 

[mtsmahia]

Re: 回复: Trig identitiy simplification

.

if you are right, then Fitzpatrick is wrong LOL

edit----why did u change your response?

 

[rocktheyard]

Re: 回复: Trig identitiy simplification

if you are right, then Fitzpatrick is wrong LOL

edit----why did u change your response?

I was right, but simply to prove shuning's first answer. However, it was only after that I discovered that you could simplify it further .

Ahh, too quick with the mouse, lol.

 

[mtsmahia]

Re: 回复: Re: 回复: Trig identitiy simplification

nice...never thought about solving it that way...thanks!

and btw..best of luck for this year!

 

[shuning]

回复: Re: 回复: Re: 回复: Trig identitiy simplification

^^
u2. best of luck ^^

 

[addikaye03]

1-sin^2(180-@)

Since sin@=sin(180-@) by observing quadrants

Therefore,
=1-sin^2@

[sin^2@+cos^2@=1]

Therefore,
=cos^2@