Introduction to Trigonometry

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Chapter 8 excercise 8. 3

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Introduction to trigonometry: 

Introduction to trigonometry CHAPTER – 8 EXERCISE – 8.3

QUESTION 2:- Show that: (i) tan 48o tan 23o tan 42o tan67o = 1 (ii) cos38o cos52o – sin38o sin52o = 0: 

QUESTION 2:- Show that: (i) tan 48o tan 23o tan 42o tan67o = 1 (ii) cos38o cos52o – sin38o sin52o = 0

QUESTION 3 :-If tan 2A = cot (A – 18o), where 2A is an acute angle, find the value of A.: 

QUESTION 3 :- If tan 2A = cot (A – 18o), where 2A is an acute angle, find the value of A.

QUESTION 4:-If tan A = cot B, prove that A + B = 90o.: 

QUESTION 4:- If tan A = cot B, prove that A + B = 90o. Let ‘s meet again