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Q) Evaluate : (3 cos 2 30 – 6 cosec 2 30) / tan 2 60.
(Q 25 B – 30/4/2 – CBSE 2026 Question Paper)
Ans:
Step 1:Given expression is: 
It can also be expressed as: 
Step 2: We know that the value of cos 30 0 = 
,
cosec 30 0 = 2 and tan 60 0 = √3
Step 3: By substituting these values in the above expression, we get:
= 
= 
= 
= 
= 
= – 7.25
Therefore, the value of the given expression is – 7.25.
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