Are these identities true for0° SA S 90° ? If not, for which valueso – InterviewSolution

1.

Are these identities true for0° SA S 90° ? If not, for which valuesof A they are true ? (Page No. 290)(AS)i) sec? A-tan? A = 1

Answer»

it is applicable only for 0 degreessec^2(0 )-tan^2(0)=1-0 =1

this statement does not suits.for 30 45 90 degrees

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