00:01
Okay, here in this case, we have sec theta is equals to 4 and we have tan theta less than 0, which means that tan theta is negative.
00:11
So we just try to find out what are the values of other five trigonometric ratios or functions here.
00:17
So first thing first, what is the value? i mean, in which quadrant this theta is lying.
00:22
So we have sec positive, which means cost is positive.
00:25
So this is all school to college.
00:27
So cost is positive here, cost is positive here.
00:30
But here tan must be negative which means that we are talking about the fourth quadrant.
00:34
Okay, so we can clearly say that theta belongs to fourth quadrant.
00:40
Now in the fourth quadrant only sign, i mean only cos and its inverse will be positive.
00:46
Rest all the angles will be negative...