trigonometric formula Archives

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Deepak BoraNewbie

Asked: July 10, 2020In: CBSE, ICSE

A vertical lamp post 10 meter high stands at the corner of a rectangular field. The angle elevation of its top from the farther corner is 6 π , while from the other corner it is 4 π . The area of the field is.

This is a question in maths chapter height and distance and I can’t answer this please help??

Deepak BoraNewbie

Asked: July 10, 2020In: CBSE

Prove this standard trigonometric identity: Sin² A=1-cos²A

Deepak BoraNewbie

Asked: July 4, 2020In: CBSE, ICSE

I had a doubt for the value of iota . But I should know as I am in class 11 .