Question

Express cot 85° + cos 75° in terms of trigonometric ratios of angles between 0° and 45° NCERT Class X Mathematics - Mathematics Chapter _INTRODUCTION TO TRIGONOMETRY answer

Answer 1

cot85°=tan(90°-85°)___1
cos75°=sin(90°-75°)___2
1+2=tan5°+sin15°

Answer 2

Answer:

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