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ML Aggarwal Solutions Class 10 Mathematics Solutions for Trigonometric Identities Exercise 18 in Chapter 18 - Trigonometric Identities
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cos2 26o + cos 64o sin 26o + (tan 36o/ cot 54o)
Answer:
Solution:
Trigonometric identities are equality conditions in trigonometry that hold for all values of the variables that appear and are defined on both sides of the equivalence.
Given,
cos2 26o + cos 64o sin 26o + (tan 36o/ cot 54o)
= cos2 26o + cos (90o – 16o) sin 26o + [tan 36o/ cot (90o – 54o)]
= [cos2 26o + sin2 26o] + (tan 36o/ tan 36o)
= 1 + 1 = 2
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