00:01
Hi, here for the given question, we are given that this is the diagram.
00:06
Now, if you observe closely, this is a right triangle triangle here.
00:10
This side will be hypotenuse.
00:13
This will be adjacent one and this will be the opposite side.
00:19
So here now using pythagoras theorem, we know that the value of gi square is equal to gh square plus hi square.
00:30
So here in our case, we have 29 square is equal to gh square plus hi, which is 21 square.
00:40
Now here further on simplifying this we have 841 is equal to gh square plus 441.
00:51
So simplifying further we have gh square is equal to 841 minus 441.
00:57
So gh square will be equal to 400 which further implies that the value of gh is equal to 20.
01:04
So here we can say that our this side is equal to 20.
01:11
Now here further we need to find the measure of angle a by using the sine formula.
01:17
We have sine of g is equal to here.
01:21
If we consider a theta and here this theta will be equal to this will be opposite side for this theta...