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Any extra info on trigonometry? Any easier way around it?

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jessieh16 | Student, Grade 10 | (Level 1) Honors

Posted June 26, 2013 at 12:43 PM via web

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Any extra info on trigonometry?

Any easier way around it?

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aruv | High School Teacher | (Level 2) Valedictorian

Posted June 26, 2013 at 1:26 PM (Answer #1)

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In trignometry , only you need to remember three ratios and one universal identity.

Let ABC is  triangle ,right angle at B. There are two angles left now namely angle A and angle C. You can now apply angle sum propert of triangle,

You will find angle A and C are complementry angles.

In right angle ,hypotenuse  remain same while base and perpendicular change

For angle A , base =AB ,perpendicular=BC

For angle C , base=BC and perpendicular=AB

`sin(A)=P/H`

`cos(A)=B/H`

`tan(A)=(sin(A))/(cos(A))=P/H`

`sin^2(A)+cos^2(A)=1`

These are three fundamentals of trignometry . remember it and proper manipulation can solve any problem of your standard.

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jessieh16 | Student, Grade 10 | (Level 1) Honors

Posted June 27, 2013 at 7:42 AM (Reply #1)

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Thank you very much that has helped alot!

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