The carbonyl compounds in which carbon of carbonyl group is bonded to carbon or hydrogen and oxygen of hydroxyl moiety (-OH) are known as carboxylic acids, while in compounds where carbon is attached to carbon or hydrogen and nitrogen of ...
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Aldehydes contain the carbonyl group bonded to at least one hydrogen atom. Ketones contain the carbonyl group bonded to two carbon atoms. Aldehydes and ketones are organic compounds which incorporate a carbonyl functional group, C=O.
NCERT Solutions for Class 9 Science Chapter 8 Force and Laws of Motion Page No. 91 Question 1. NCERT Questions Exercises 9th Science Chapter 8 Force and Laws of Motion NCERT Academic Session 2023-2024 CBSE Board and Others state Board Description:
(i) (cosec θ – cot θ)² = (1-cos θ)/(1 + cos θ) (ii) (cos A)/(1 + sin A) + (1 + sin A)/(cos A) = 2 sec A (iii) (tan θ)/(1 – cot θ) + (cot θ)/(1 – tan θ) ...
(i) (sin 18°)/(cos 72°) (ii) (tan 26°)/(cot 64°) (iii) cot 48° – sin 42° (iv) cosec 31° – sec 59° NCERT Class 10 Chapter 8 Introduction to trigonometry Page No. 189 Exercise 8.3 Question No. 1