(cos 45)/(sec30+cosec30)
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Step-by-step explanation:
- cos 45=1 /root 2
- sec 30=2/root3
- cosec30=2
putting the value
1/root2
= ------------------------------
2/root3+2
1/root 2
= -------------------------
2+2root3 /root3
1. root 3
=------------- * -----------------
root 2. 2+2root3
root3
= ----------------------------
2root2 +2root6
rationalise the denomenater
root3*2root2-2root6
= ----------------------------------------
( 2root2)squar - (2root6) squar
answer is 3root2 -root6/8
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