Question

- x 30) Prove that sinA+sin 2A+sin 3A÷cosA+cos2A+cos3A=tan2A​

Answer 1

Answer:

5

Step-by-step explanation:

i don't know Iam giving an imaginary answer

Answer 2

Answer:

given below

Step-by-step explanation:

sinA+sin3A

⇒

2cos(

2

3A+A

)cos(

2

3A−A

)

2sin(

2

3A+A

)cos(

2

3A−A

)

⇒

cos2AcosA

sin2AcosA

=tan2A