if alpha and beta are supplementary angles and cos alpha=3/5, then the value of sin alpha * cos beta + cos alpha * sin beta = ?
Answers
Answered by
2
Cosα=3/5
By drawing a triangle and putting the value we get the other side as 4cm.
Now, sinαcosβ+cosαsinβ
4/5*4/5+3/5*3/5
=25/25=1
By drawing a triangle and putting the value we get the other side as 4cm.
Now, sinαcosβ+cosαsinβ
4/5*4/5+3/5*3/5
=25/25=1
Similar questions