Trigonometry Maths Question...?

pit_steel · #1 (**permalink**) 04-08-2008, 01:26 PM

Determine the measure of the base angles of an isoceles triangle in which the equal sides are 2/3 of the length of the base.

happy · #2 (**permalink**) 04-08-2008, 01:27 PM

you got me there

Tara · #3 (**permalink**) 04-08-2008, 01:27 PM

41.4 degrees

set base as x and equal sides as 2/3(x)
split the triangle into half.
now your base will be 1/2(x) and your hypothenuse 2/3(x)
inverse cosine 1/2(x) / 2/3(x) will give you the answer

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