Answers

  • Brainly User
2014-11-04T15:55:48+05:30
HI5!!
answer is 10
cos 45 is 1/root 2 ans so sec 45 is root 2 and sec^2 45 is 2
in the similar way,treat cosec and sin since sin=1/cosec
and so 2X2+3X2=10
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  • Brainly User
2014-11-04T15:58:58+05:30
Sec^2 45=2
as root 2*root 2
so 2 sec^2= 4
cosec^2 is also 2
so 3 cosec^2= 6
so 4+6=10

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