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What is the value of tan(-135) and also cot(-135)..? Solve by writing the steps.

What is the value of tan(-135) and also cot(-135)..?  Solve by writing the steps.

Grade:11

3 Answers

Saurabh Koranglekar
askIITians Faculty 10335 Points
5 years ago
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Arun
25750 Points
5 years ago
Dear Vinod
 
tan (-135) = – tan 135 = – tan (90+ 45) = cot 45 = 1
 
similarily
cot (- 135) = – cot 135 = – cot (90+ 45) = tan 45 = 1
Sripad Sambrani
22 Points
4 years ago
Tan(-135) = tan(180-135)= tan(45)=1; since tan is periodic by 180
 
Cot(-135)=1/tan(-135)=1/1=1
 
Trust this helps.

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