Question

1) Sin(90-A)=CosA. A)1 and 2


2) Tan²A-Sec²A=1(0°≤A≤90°). B)1 and 3


3)Cos 60°=1/2. C)2 and 3


D)1 ,2 and 3






Which of the following are true

Please answer it ​

Answer 1

Answer:

1 and 2 both are right..

Answer 2

Answer:

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