In an isosceles triangle the base is 20 cms the angles are 89.5 how long would the sides be? i've lost formula

Question

In an isoscels triangle, both base angles are the same ( just to explain to some)

Thank to all, ernaepl your answer was ok. I now have a point getting on 23+meters long.

Answer 1

Retangular triangle with base 10 cm and side x to be discovered(you have to draw to understand)

cos 89.5 = 10 / x

cos 89.5 = 0,0087

x= 10/ 0,0087

x =1149,45 cm

Answer 2

i cant remeber what they mean but isnt the formula

SOH CAH TOA

i hope this helps


but surely you need either 2 angles or 2 lengths and you only have one of each


xxx vici

Answer 3

side = 10/cos(89.5)