Question

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

Answer 1

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

The answer is A=15

Answer 2

✏Answer:

Sin3A=Cos3A

Cos(90-3A)=Cos3A

90-3A=3A

90=3A+3A

90=6A

90/6=A

A=15

^•^