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| 1. |
Express all trigonometry ratio in term of sinA |
| Answer» Let sin A = x/1 Therefore =opposite/hypotenuseBy Pythagoras theorem 3rd side =√1-x*x = √1-x2cos A = √1-x2/1 =√1-sin2Atan A = x/√1-x2 = sinA/√1-sin2ACosec A = 1/sinAsec A = 1/√1-sin2Acot A = √1-sin2A/sinA | |