1.

Express the following in trignometric ratios between o to 451)cos81+cot812)cos76+sec76​

Answer»

Answer:

sin81

= sin(90-9)  

= cos9  

tan81

= tan ( 90-9)

= COT 9  

sin 81° + tan 81°= cos9°+ cot9°

Step-by-step explanation:

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