In this article you will get the NCERT Exemplar Problems and Solutions (Part-IB) for class 10 Mathematics chapter 8, Introduction to Trigonometry and its Applications. This part contains solutions Q. No. 9-15 of exercise 8.1 of NCERT Exemplar for Mathematics chapter 8. Every question is provided with a detailed and easy explanation.
Find below the NCERT Exemplar problems and their solutions for Class 10 Mathematics Chapter, Introduction to Trigonometry and its Applications:
Exercise 8.1
Multiple Choice Questions (Q. No. 9-15)
Question. 9 If sin A + sin2 A = 1 then the value of (cos2 A + cos4 A) is
⟹ tanθ = tan60°
⟹ θ = 60°
Hence, the Sun's elevation is 60°.