evaluate ...cos15°-sin 15°
smitaraj:
it
no 1/2
1/√2
yes
hmm
1/√2 hai
mmmm
mes. send
ni hote
?????
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sin(90°-15°) - sin15°
sin 75° - sin 15°
sin60°
√3/2
ans is 1/√2
it's
@sin45
hmmmm
use cos15=@√3+1/2√2
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