Question

sin (A + B) = sin A cos B + cos A sin B.
​

Answer 1

Step-by-step explanation:

WE have to find value of sin15

o

=sin(45

o

−30

o

)

=sin45

o

cos30

o

−cos45

o

sin30

o

=

2

1

×

2

3

−

2

1

×

2

1

=

2

1

×

2

3

−

2

1

×

2

1

=

2

2

3

−1