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Sahay Sir > Question Answers > NCERT Class 10 > Maths > Chapter 8 - Introduction to Trigonometry > Write ‘True’ or ‘False’ and justify your answer in each of the following: The value of the expression (cos^2 23° – sin^2 67°) is positive.

Write ‘True’ or ‘False’ and justify your answer in each of the following: The value of the expression (cos^2 23° – sin^2 67°) is positive.

Write ‘True’ or ‘False’ and justify your answer in each of the following: The value of the expression (cos^2 23° – sin^2 67°) is positive.