Question 1119131
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(a) There is enough information to calculate the lengths of all of a, b, c, and d.<br>
(b) We are given cos(x) = 5/13, so sin(x) = 12/13 and tan(x) = 12/5.  Then<br>
{{{12/a = cos(x) = 5/13}}}  -->  a = 156/5
{{{b/12 = tan(x) = 12/5}}}  -->  b = 144/5
By similar triangles, {{{b/12 = 12/c}}}  -->  bc = 144  -->  c =5
By the Pythagorean Theorem, d = 13<br>
(c) not applicable....