# Recent Activity

Activity stream for all registered members at Math Forums.

that should be sign for "degree", it must be some error or wrong code usage [IMG]

Oct 27, 2021 at 5:18 PM
2. ### MathLover1 liked nycmathguy's post in the thread Calculate the length of a side of a triangle knowing.

I'm back. I couldn't stay away from math for too long.

Oct 27, 2021 at 5:04 PM
3. nycmathguy posted a new thread.

What does the upside-down exclamation point mean in this example for (a) and (b)? [ATTACH] #### Forum: Geometry and Trigonometry

Oct 27, 2021 at 3:48 PM
4. ### nycmathguy replied to the thread Help Reversing Equation.

Thanks.

Oct 27, 2021 at 3:41 PM
5. ### nycmathguy liked MathLover1's post in the thread Help Reversing Equation.

right

Oct 27, 2021 at 3:40 PM
6. ### nycmathguy replied to the thread Calculate the length of a side of a triangle knowing.

I'm back. I couldn't stay away from math for too long.

Oct 27, 2021 at 3:40 PM
7. ### nycmathguy liked MathLover1's post in the thread Calculate the length of a side of a triangle knowing.

if a/c=1/ 2 then c=2a or a=c/2 ; then in formula above, you express a as c/2 whatever the ratio is, use it to express side a in terms...

Oct 27, 2021 at 3:39 PM
8. ### nycmathguy liked MathLover1's post in the thread Calculate the length of a side of a triangle knowing.

in this case yes [ATTACH] in your drawing the angle would be between c and b since given the ratio between the other two sides, use... Oct 27, 2021 at 3:39 PM
9. ### nycmathguy liked MathLover1's post in the thread Calculate the length of a side of a triangle knowing.

use cosine law: [IMG]

Oct 27, 2021 at 3:39 PM
10. ### MathLover1 replied to the thread Calculate the length of a side of a triangle knowing.

if a/c=1/ 2 then c=2a or a=c/2 ; then in formula above, you express a as c/2 whatever the ratio is, use it to express side a in terms...

Oct 26, 2021 at 7:54 PM
11. ### MathNoob replied to the thread Calculate the length of a side of a triangle knowing.

I thought the sizes are somehow relative to the angle. The ratio could be 1/2 or 2/4...

Oct 26, 2021 at 7:46 PM
12. ### MathLover1 attached a file to the thread Calculate the length of a side of a triangle knowing.

in this case yes [ATTACH] in your drawing the angle would be between c and b since given the ratio between the other two sides, use... Oct 26, 2021 at 7:18 PM
13. ### MathNoob replied to the thread Calculate the length of a side of a triangle knowing.

Shouldnt it be the angle between a and b instead of alpha in the expression?

Oct 26, 2021 at 7:08 PM
14. ### MathNoob liked MathLover1's post in the thread Calculate the length of a side of a triangle knowing.

use cosine law: [IMG]

Oct 26, 2021 at 6:53 PM