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Grade: 11
        
What is the value of tan(-135) and also cot(-135)..?  Solve by writing the steps.
6 months ago

Answers : (2)

Saurabh Koranglekar
askIITians Faculty
1897 Points
							576-347_1.PNG
						
6 months ago
Arun
20404 Points
							
Dear Vinod
 
tan (-135) = – tan 135 = – tan (90+ 45) = cot 45 = 1
 
similarily
cot (- 135) = – cot 135 = – cot (90+ 45) = tan 45 = 1
6 months ago
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