Question

0 2 2 Cosso -
3, find o ( it is a cos. 30​

Answer 1

Answer:

$\huge\underline\pink{\mathfrak{May Be :}}$ 

Step-by-step explanation:

sin3α=4sinαsin(x+α)sin(x−α)

3sinα−4sin

3

α=4sinα(sin

2

x−sin

2

α)

⇒sin

2

x=

4

3

⇒cos

2

x=

4

1

∴864sin

2

x+3620cos

2

x=216×3+905

=648+905

=1553