Question 1027469
Isn't it amazing how fast you can get behind in math?
It's like walking into the middle of a conversation and
trying to figure out who they're talking about and what's
so important about it.
Is this trigonometry or just plain geometry?
Are you given everything except 1 angle?
You've got to be a LOT more explicit
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In general, if {{{ theta }}} is the unknown angle, and
{{{ a }}} is the side opposite {{{ theta }}}, and {{{ b }}} is
the side adjacent to {{{ theta }}}, and {{{ c }}} is the 
hypotenuse, then:
{{{ sin( theta ) = a/c }}}
{{{ cos( theta ) = b/c }}}
{{{ tan( theta ) = a/b }}}
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Then {{{ theta }}} becomes the inverse of these functions
{{{ theta = arc sin( a/c ) }}}
{{{ theta = arc cos( b/c ) }}}
{{{ theta = arc tan( a/b ) }}}
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If you're not up to trig yet, this is a waste of time.
If it's just pain old geometry, then
(1) The sum of the angles of ANY triangle = {{{ 180 }}} degrees
(2) Suppose you're looking for angle {{{ A }}}
(3) Suppose {{{ B = 52 }}} degrees, and of course {{{ C = 90 }}} degrees
(4) Then you can say: {{{ A + 52 + 90 = 180 }}}
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Now solve:
{{{ A = 180 - 52 - 90 }}}
{{{ A = 180 - 142 }}}
{{{ A = 38 }}} degrees
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In college, they have remedial EVERYTHING,  but it's like deja vu
ALMOST all over again. Paying attention is a heck of a lot more easy.