Question

find the trignometric function of cos 135 degree​

Answer 1

Answer:

-1/√2

Step-by-step explanation:

cos(135)= cos(180-45)

= -1/√2

since it lies in second quadrant, cos is negative in second quadrant

All silver tea cups

• All trigonometrics are positive
• silver only sin and cosec are positive
• tea only tan and cot are positive
• cups only cos and sec are positive

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