0 votes
154 views
in Trigonometry by (37.0k points)
closed by

If sec 4A = cosec(A -20°) , where 4A is an acute angle, find the value of A.

1 Answer

+1 vote
by (35.5k points)
selected by
 
Best answer

Sec 4A = cosec(A -20°)

⇒ cosec (90° - 4A) = cosec(A -20°)

⇒ (90° - 4A) = A -20°

⇒ 5A = 110°

⇒ A = \(\frac{110°}{5}\) = 22°

Welcome to Sarthaks eConnect: A unique platform where students can interact with teachers/experts/students to get solutions to their queries. Students (upto class 10+2) preparing for All Government Exams, CBSE Board Exam, ICSE Board Exam, State Board Exam, JEE (Mains+Advance) and NEET can ask questions from any subject and get quick answers by subject teachers/ experts/mentors/students.

Categories

...