In the SOH mnemonic, what does 'S' stand for?

• A. Sine
• B. Speed
• C. Slope
• D. Sinusoidal

Answer: (A)

In the context of the SOH mnemonic, 'S' stands for Sine. This mnemonic is used to remember the definitions of the trigonometric functions in relation to a right triangle. Specifically, SOH indicates that the sine of an angle is equal to the ratio of the length of the opposite side to the length of the hypotenuse.

To clarify further, in the SOH mnemonic:

• 'S' signifies Sine,

• 'O' corresponds to the opposite side,

• 'H' refers to the hypotenuse.

Thus, when you are given an angle in a right triangle, you can use the definition of sine to determine the proportion of the lengths of the sides involved. Understanding this relationship is fundamental in trigonometry, making Sine a crucial concept that is succinctly captured by the mnemonic.