find the distance between the points (a cos65°,0) and (0,a cos25°).
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heya friend !!?
it's too easy
__________
let there is two point A have coordinate (acos65°,0)and B coordinate (0,acos25°)
now, by using distance formulae
√(x2-x1)^2+(y2-y1)^2.
=)√(0-acos65°)+(acos25°-0)^2
=)√a^2cos^2 65°+a^2cos^2 25
=)√a^2cos^2 65°+a^2cos^2 (90°-65°)..
=)√a^2cos^2 65°+a^2 sin^2 65°
=)√a^2(cos ^265° sin^2 65°)
=)√a^2(1) ## 【sin^2@+cos^2@=1】
=)√a^2
=),a Ans.
hope it help you ☺1☺☺☺
@#rajujumar☺☺☺
it's too easy
__________
let there is two point A have coordinate (acos65°,0)and B coordinate (0,acos25°)
now, by using distance formulae
√(x2-x1)^2+(y2-y1)^2.
=)√(0-acos65°)+(acos25°-0)^2
=)√a^2cos^2 65°+a^2cos^2 25
=)√a^2cos^2 65°+a^2cos^2 (90°-65°)..
=)√a^2cos^2 65°+a^2 sin^2 65°
=)√a^2(cos ^265° sin^2 65°)
=)√a^2(1) ## 【sin^2@+cos^2@=1】
=)√a^2
=),a Ans.
hope it help you ☺1☺☺☺
@#rajujumar☺☺☺
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