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19 votes
Find the value of a from the following 1. sin3a=cos3a​

User Legesh
by
3.8k points

2 Answers

3 votes

  • Sin3A=Cos3A
  • Cos(90-3A)=Cos3A
  • 90-3A=3A
  • 90=6A
  • 90/6=A
  • A=15

The answer is A=15

User Makwana Ketan
by
3.4k points
10 votes

Answer:

Sin3A=Cos3A

Cos(90-3A)=Cos3A

90-3A=3A

90=3A+3A

90=6A

90/6=A

A=15

^•^

User Ted Shaneyfelt
by
3.4k points