Скачать или смотреть Class 10 Ch- 8 Q 57 | Q 58 Trigonometry | Important Question | Exam previous year Question

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Q 57. Prove that
CosA 1+ sinA
_________ + _________ = 2 secA
1+ sinA CosA

Q 58. Evalute

tan²60° + 4sin²45° + 3sec²30° + 5cos²90°
_________________________________________
Cosec30° + sec60° – cot²30°

Resource: National Council of Educational Research and Training (NCERT) Solutions
Class: 10th Class
Subject: Maths
Chapter: Chapter 8 – Introduction to Trigonometry


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