You have to split it into triangles
but you have to know how to use pythagorus in 3D shapes
but you have to know how to use pythagorus in 3D shapes
For each equation, decide if it is always true or never true. x − 13 = x + 1 x + 1 2 = x − 1 2 2 ( x + 3 ) = 5 x + 6 − 3 x x − 3
1 answer:
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First we will convert those radian angles to degrees, since my mind works better with degrees. Let's work one at a time. First, 
. If we start at the positive x-axis and measure out 315 we end up in the 4th quadrant with a reference angle of 45 with the positive x-axis. The side across from the reference angle is -1, the side adjacent to the angle is 1, and the hypotenuse is sqrt2. The cotangent of this angle, then is 1/-1 which is -1. As for the second one, converting radians to degrees gives us that 
. Sweeping out that angle has us going around the origin more than once and ending up in the first quadrant with a reference angle of 30° with the positive x-axis. The side across from the angle is 1, the side adjacent to the angle is √3, and the hypotenuse is 2. Therefore, the secant of that angle is 2/√3.
This is just here for the 20 character limit but the answer is in the picture.
