Math, asked by moorthysavadi0481, 9 months ago

Express sin 18 degree + 81 degree in terms of trigonometry ratio of angle between zero degree and 45 degree

Answers

Answered by leeza256

0

Step-by-step explanation:

Sin 81° = sin (90-9)

= cos9°

tan 81° = tan (90-9)

= cot 9°

=> sin 81° + tan 81° = cos 9° + cot 9°

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