if p=12,b=5 and h=13 then find 3cos@-2tan#
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Viewed as a right angled triangle
[Math Processing Error]
can be thought of as the ratio of opposite to adjacent sides in a triangle with sides [Math Processing Error] and [Math Processing Error] (where [Math Processing Error] is derived from the Pythagorean Theorem)
So
[Math Processing Error]
and
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