The value of (sin 30° + cos 30°) – (sin 60°+ cos 60°) is

(A) – 1  

(B) 0  

(C) 1  

(D) 2

Slide1.JPG

Advertisement

  1. Chapter 8 Class 10 Introduction to Trignometry (Term 1)
  2. Serial order wise

Transcript

Question 1 The value of (sin 30° + cos 30°) – (sin 60°+ cos 60°) is (A) – 1 (B) 0 (C) 1 (D) 2 Now, (sin 30° + cos 30°) – (sin 60°+ cos 60°) = (𝟏/𝟐+√𝟑/𝟐)−(√𝟑/𝟐+𝟏/𝟐) = 1/2−1/2+√3/2−√3/2 = 0 So, the correct answer is (B)

About the Author

Davneet Singh's photo - Teacher, Engineer, Marketer
Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 10 years. He provides courses for Maths and Science at Teachoo.