Question

if cos alpha is equal to zero then sin bracket alpha minus beta can be reduced to​

Answer 1

Answer:

if cos alpha plus beta is equal to zero then sin bracket alpha minus beta can be reduced to cos2 beta

Answer 2

Step-by-step explanation:

If cos(alpha + beta)=0, then sin(alpha-beta) can be reduced to. Hence, sin(α-β) can be reduced to cos2β.