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| 1. |
Cos theta minus cot theta whole square equals to 1 minus cos theta by 1 + cos theta |
| Answer» Cos theta = 1/sin theta-cos theta /sin theta whole square=1-cos theta / sin theta ka whole square 1-cos theta ka whole square / sin square theta =(1-cos theta)(1-cos theta)/(1-cos theta)(1+cos theta) = 1-cos theta /1+cos theya | |