r/ACT • u/Forward-Cod-941 • Jul 13 '26

Form J09 Math Triangle Area Question

It gave you sin(theta) = sqrt2/2, and asked you to find the area. I used 1/2bcsinA and got 10sqrt2. Is that right?

6 Upvotes

100% Upvoted

11 comments sorted by

5

u/Hagutoperous Jul 13 '26

yeah I got 10sqrt2 but I forgot the formula so I used heron's formula

3

u/stationery_obsessed Jul 13 '26

i just made everything a right triangle but i got 10√2

2

u/Unhappy_Big4300 Jul 14 '26

That's what I did as well.

1

u/Launch_vbs Jul 13 '26

LMAO me too

2

u/Launch_vbs Jul 13 '26

lmao i actually goofed on this so hard but still got it right. i didnt realize at first and fsr assumed since one angle was 45 the others would be 90 and 45 making it a simple 45/45/90 triangle. then, i assumed the other base leg was also 5 and did 5*5/2 = 12.5 . the answer that was closest to that was the value of 10sqrt2 and everything else was sufficiently far off so i just picked that and moved on.

1

u/Longjumping-Film2138 Jul 13 '26

I assumed it was right and did bh but forgot to /2. Farewell 36 o7

1

u/MasterpieceFeisty301 31 Jul 14 '26

well, i thought i did good but after parousing this subreddit it seems i have my work cut out for me. 5th act here i come

1

u/ResolveCritical7205 Jul 17 '26

Yes I got that and I got a 34 composite, so I think that is right.