~ Nature's Huat ah! Blog ~

last SG · 2006-01-31T00:08:52+00:00

morning monk, morning mil0l0s i read that in some blog also, "zhng my car"

stomach

ard 30-35. rite???

anyone noes how to do this qn?

lg(2x+5) = 1 + lg x

1 = lg 10

lg(2x+5) = lg10 + lg x
lg(2x+5) = lg(10x)
2x+5=10x
x=5/8

Laughing

noe le.

what abt this?

(tan x + sin x) ( tan x - sin x) = tan² x sin² x

i got my ans as tan^2 x - sin^2 x

then get sin^2 x + cos^2 x = 1

trying to prove the above trigo identity? Laughing

machiam rainbow method to clear le....

arboden.

haha. i solved

wot secret manual is that? Laughing

(cosex x -1) (cosec x + 1) ( sec x -1) ( sec x + 1) = 1

how to do?

long lost book i found

Laughing

cosex? Laughing

new maths term taught in school
Laughing

too fast. its cosec x. noe nt?

(cosex x -1) (cosec x + 1) ( sec x -1) ( sec x + 1)
= (cosec^2 x - 1) (sec^2 x - 1)
= (cot^2 x )(tan^2 x)
= 1

Laughing

lebbrel up~ Laughing

whr did the -1 go??

noe liao. but how to get 1 then...

« Previous Page Next Page »