A 20-Meter Line Is Used to Tether a Helium-Filled Balloon $\sin 85 ^ { \circ } = \frac { h } { 20 }$

question 383

Multiple Choice

A 20-meter line is used to tether a helium-filled balloon.Because of a breeze, the line makes an angle of approximately 85° with the ground.Use a trigonometric function to write an equation involving the unknown quantity.

• A) \(\sin 85 ^ { \circ } = \frac { h } { 20 }\) (where h is height.)
• B) \(\cos 85 ^ { \circ } = \frac { h } { 20 }\) (where h is height.)
• C) \(\cos 85 ^ { \circ } = \frac { 20 } { h }\) (where h is height.)
• D) \(\sin 85 ^ { \circ } = \frac { 20 } { h }\) (where h is height.)
• E) \(\tan 85 ^ { \circ } = \frac { h } { 20 }\) (where h is height.)

---

Definitions:

Currency Exchange Rates

Currency exchange rates are the values at which currencies can be exchanged for one another, influenced by factors like economic conditions and geopolitical events.

Currency Conversion

The process of converting the value of one currency into the value of another based on current exchange rates.

Travellers' Cheques

Preprinted, fixed-amount cheques used by travellers to safely carry and spend money abroad.

Canadian Dollar

The official currency of Canada, often symbolized as CAD or denoted by the dollar sign '$' with a distinguishing C to indicate Canadian currency.