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  • Brainly User
2014-12-28T16:15:57+05:30
The value of sin 30 is 1/2 and the value of cos60 is 1/2 and the value of cosec30 is 2 then the answer is 
1/2×1/2+2=9/4
plz mark as the best
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i frgt to do LCM
its ok yar
chance co30 degree into s 1/sin30 degree
then solve this
cosec 30 degree = 1/sin30 degree
2014-12-28T16:19:28+05:30

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SIn 30 = 1/2
Cos 60 = 1/2
Cosec 30 = 1/sin30
=1/1/2
=2
So substituting these values:
1/2 * 1/2 + 2
=1/4 + 2
=9/4
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