1 answer:
Answer: 40
ADE = 70 por suma de angulos interiores en triangulo ADE
En triangulos BDE y AED
AE=BE por dato
DE lado comun
AED= BED= 90
por tanto los triangulos son iguales por tener dos lados y el angulo comprendido respectivamente iguales
Luego ADE = BDE = 70 y AD=BD=BC por ser triangulos BDE y AED iguales
Luego triangulo BDC isosceles de base DC
ADE + BDE + BDC = 180 por suma de angulos consecutivos
BDC = 180 - 70 -70 = 40
Ф = BDC =BCD = 40 por ser angulos bases de un triangulo isosceles
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should be (5,-5) just because its in the 5 then when its going down its -5
Answer:
The length of the third side is 23
Step-by-step explanation:
All check
No Solution (i cant see the picture you attached but i can explain why.)
cos^-1(sqrt2/2)=0 is false
ST^2 = 7 ( 7 + 23) ( I think its called the tangent/secant length theorem)
ST^2 = 210
ST = sqrt 210 = 14.49 to nearest hundredth.
You could start by noticing

so you don't have to worry about the decimal point anymore. Then carry out the division as usual.
172*24 = 4128
so we have
4172 = 4128 + 44 = 172*24 + 44
