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Trigonometry Mnemonics Quiz

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Questions and Answers

What are the mnemonic devices used to remember the sine, cosine, and tangent ratios in a right triangle?

SOH-CAH-TOA, Some Old Horses Chew Apples Happily Throughout Old Age, Oh, Ah, Oh-Ah

How can the letters in SOH-CAH-TOA be expanded into a sentence?

Some Old Horses Chew Apples Happily Throughout Old Age

What is the alternate way to remember the letters for Sin, Cos, and Tan?

Oh, Ah, Oh-Ah

What is the mnemonic device for remembering Sin, Cos, and Tan as O/H, A/H, O/A?

Oscar Has A Hold On Angie Signup and view all the answers

What is the longer mnemonic for the letters O, H, A?

Oscar Had A Heap of Apples Signup and view all the answers

What are the trigonometric ratios for the right-angled triangle ABC, with angle A as the reference angle?

The trigonometric ratios for angle A in triangle ABC are: sin A = AB/AC, cos A = BC/AC, and tan A = AB/BC Signup and view all the answers

In the right-angled triangle ABC, right-angled at B, if the hypotenuse AC = 5cm, base BC = 3cm, and perpendicular AB = 4cm, what are the values of tan θ, sin θ, and cos θ?

tan θ = AB/BC = 4/3, sin θ = AB/AC = 4/5, and cos θ = BC/AC = 3/5 Signup and view all the answers

What is the etymology of the word 'trigonometry'?

The word 'trigonometry' is derived from the Greek words 'tri' (meaning three), 'gon' (meaning sides), and 'metron' (meaning measure). Signup and view all the answers

What are the various trigonometric ratios for specific angles used in trigonometry?

The various trigonometric ratios for specific angles include sine, cosine, tangent, cosecant, secant, and cotangent. Signup and view all the answers

What are the three sides of a right-angled triangle and how are they related to the trigonometric ratios?

In a right-angled triangle, the three sides are the hypotenuse, opposite, and adjacent sides, which are related to the trigonometric ratios as sine (opposite/hypotenuse), cosine (adjacent/hypotenuse), and tangent (opposite/adjacent). Signup and view all the answers