Question

cot 15° + cot 75° +cot 135º -cos ec30º =
1) 4
2) 3​

Answer 1

Answer:

cot 30+ cot 60 + cot 90 +cot 45 - cosec 30

√3+1/√3+0+1-2

(3+1)/√3 -1

4/√3 -1

(4-√3)√3

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