Last updated at Dec. 24, 2019 by Teachoo
Transcript
Example 11 Express cot 85° + cos 75° in terms of trigonometric ratios of angles between 0° and 45°. cot 85° + cos75° = cot (90° − 5) + cos (90° − 15°) = tan 5° + sin 15° Hence required value is tan 5° + sin 15°
Trignometric ratios of complementry angles
Example 9 Deleted for CBSE Board 2022 Exams
Ex 8.3, 1 (i) Deleted for CBSE Board 2022 Exams
Ex 8.3, 2 (i) Important Deleted for CBSE Board 2022 Exams
Ex 8.3, 7 Deleted for CBSE Board 2022 Exams
Example 11 Important Deleted for CBSE Board 2022 Exams You are here
Ex 8.3, 4 Deleted for CBSE Board 2022 Exams
Example 10 Important Deleted for CBSE Board 2022 Exams
Ex 8.3, 3 Deleted for CBSE Board 2022 Exams
Ex 8.3, 5 Important Deleted for CBSE Board 2022 Exams
Ex 8.3, 6 Important Deleted for CBSE Board 2022 Exams
Trignometric ratios of complementry angles
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