1.

If tan alpha is equal to the integral solution of the inequality 4x^(2)-16x+15lt0 and cos beta is equal to the slope of the bisector of the coordinate axes in the first quadrant, then sin(alpha+beta)sin(alpha-beta) is equal to

Answer»

`1/5`
`3/5`
`2/sqrt(5)`
`4/5`

ANSWER :D


Discussion

No Comment Found