00:01
I'll answer the two that i can clearly see information for.
00:03
And so in 23, you can use a lot of signs.
00:07
The sign of an angle over its opposite side is equal to the sign of another angle over its opposite side.
00:16
Through cross multiplication, 50, sine 30 would equal x, sine 100.
00:25
And so x would be equal to 50 sine 30 over the sign of 100, which would be about, let's go to a calculator, make sure in degree mode, 50 sign 30 over sign 100 is about 25 point, i don't know what you should be rounding to, i'll go to the 100th, 25 .39.
01:00
In number 25, we can't use law of signs, we must use, use, the law of cosines.
01:09
And we can say that we can use the law of cosines in order to find the third side, and then we can use law of signs.
01:31
So we could say that i'll call the side b.
01:37
B squared is equal to the other two sides squared, minus two times the other two sides times the cosine of the included angle...