1.

Iffrom the top of a tower of 60 meter height, the angles of depression of the top and floor of a house are alpha and beta " respectively and if the height of the house is " (60sin(beta-alpha))/x, then x =

Answer»

`SINALPHASINBETA`
`cosalphacosbeta`
`sinalphacosbeta`
`cos ALPHA SIN BETA`

Answer :D


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