Question

Is this correct working out

Answer 1

The figure is omitted--please sketch it to confirm my answer.

`\tan( \alpha ) = ( √(3) )/(5)`

`\sqrt{ ({ √(3)) }^(2) + {5}^(2) } = √(3 + 25) = √(28) = 2 √(7)`

`\cos( \alpha ) = (5)/(2 √(7) )`

`\sin( \alpha ) = ( √(3) )/(2 √(7) ) = ( √(21) )/(14)`