sin 60/sin 45= ???
pls ans fast
philheath:
root 3/ root 2
how can u show in detail
pls show it
u mean the detail of the rationalise method or...
yes
I will show in the answer itself OK..
ok
it is very detailed in class 8 and 9 textbook.
Answers
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Sin 60 =underroot 3/2
Sin 45=1/underroot 2
Sin60 /sin 45=underroot 6/2
Sin 45=1/underroot 2
Sin60 /sin 45=underroot 6/2
Answered by
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sin60/sin45=(√3/2) / (1/√2)
=√3/2x√2
=√6/2
=√6/2 x (√6/√6) by rationalise method
=√6x√6/2√6
=6/2√6
=3/√6
RATIONALISE METHOD
i)YOU CAN TAKE THE DENOMINATOR OR NUMERATOR. eg,
2x-1/2x+1
=2x-1/2x+1 x( 2x+1/2x+1)............1)
here I take the numerator I.e (2x-1)
=2x-1/2x+1 x (2x-1/2x-1).........2)
here I take the denomination i.e,(2x+1)
ii)if the factor you take has a +ve sign you should change it to -ve,in equation 1 the factor has a -ve sign I change it to +ve sign.
iii)but if it is -ve sign you should change to +ve sign when you multiply. The factor I take has a +ve sign I change it to -ve sign.
I HOPE THIS WILL HELP YOU...
=√3/2x√2
=√6/2
=√6/2 x (√6/√6) by rationalise method
=√6x√6/2√6
=6/2√6
=3/√6
RATIONALISE METHOD
i)YOU CAN TAKE THE DENOMINATOR OR NUMERATOR. eg,
2x-1/2x+1
=2x-1/2x+1 x( 2x+1/2x+1)............1)
here I take the numerator I.e (2x-1)
=2x-1/2x+1 x (2x-1/2x-1).........2)
here I take the denomination i.e,(2x+1)
ii)if the factor you take has a +ve sign you should change it to -ve,in equation 1 the factor has a -ve sign I change it to +ve sign.
iii)but if it is -ve sign you should change to +ve sign when you multiply. The factor I take has a +ve sign I change it to -ve sign.
I HOPE THIS WILL HELP YOU...
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