Question 1026455
Let {{{ x = sin (theta) }}}
{{{ 3x^2 + 16x -35 = 0 }}}
{{{ ( 3x - 5 )*( x + 7 ) = 0 }}}
( you can use quadratic formula, I 
just figured it out trial and error )
{{{ x = 5/3 }}}
{{{ x = -7 }}}
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Any sine function, all by itself, can
only vary from {{{ +1 }}} to {{{ -1 }}},
so {{{ -1 <= x  <= 1 }}}, and there is
no solution