Sin A + Cos B = 1, A = 30° and B is an acute angle, then find the value of B.

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  1. Class 10
  2. Solutions of Sample Papers for Class 10 Boards

Transcript

Question 12 sin A + cos B = 1, A = 30° and B is an acute angle, then find the value of B.Given sin A + cos B = 1 Putting A = 30° sin 30° + cos B = 1 𝟏/𝟐 + cos B = 1 cos B = 1 − 1/2 cos B = 1/2 cos B = cos 60° Thus, B = 60°

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Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 9 years. He provides courses for Maths and Science at Teachoo.