# trig

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Find the altitude of an isosceles triangle whose base in 30 cm vertex angle is 75 degres

• trig -

draw the altitude,
I see a right-angled triangle with base 15 and base angle of 52.5°
Call the height h
h/15 = tan 52.5
h = 15tan 52.5
= ....

I will let you do the button-pushing.

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