Question

please help me to solve this problem ​

Answer 1

Answer:-

7 Cos 55° / 3 Sin 35° -

4 ( Cos 70° Cosec 20° ) /

3 Tan 5° Tan 25° Tan 45°

Tan 65° Tan85°

Now, Cos 55° = Sin35°,

Cos 70° = Sin 20°,

Tan 5° = Cot 85° &

Tan 25° = Cot 65°

Putting these values we get,

7/3 - 4/3

= 3/3

= 1