tan(210)*cot(390)+tan(660)*cot(1320)=0
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tan (270-60)cot(360-30)+tan (2x360-660)cot(4x360-1320)
cot60 cot30 -tan60 tan30
=1-1 =0
cot60 cot30 -tan60 tan30
=1-1 =0
reddi625sahu:
is tht 0 or 2
yea its 0
its _- tan60tan30 ;hence 1-1 =0
you are wrong
y so
nw i corrected it right .....
hmmm
Answered by
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tan(180+30)*cot(360+30)+tan(720-60)*cot(1260+60)
tan30*cot30+(-tan60)*(cot60)
(1/✓3)*(✓3)-(✓3)*(1/✓3)
1-1
0
Hence proved
tan30*cot30+(-tan60)*(cot60)
(1/✓3)*(✓3)-(✓3)*(1/✓3)
1-1
0
Hence proved
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