Sometimes in your work you will need to convert an angle measured in degrees and minutes to its equivalent in decimal degrees.
To convert the angle 4°30′ to decimal form follow these two steps:
1. Write the angle as a sum of degrees and minutes
4°30′ = 4°+ 30′
2. Use a 60-base fraction to convert minutes to degrees.
= 4°+ 0.5°
Get a $20-or-so dual-display scientific calculator, even if you can`t take it with you into the exam hall. A calculator is also a learning tool, Technology Use is one of the 9 Essential Skills you can`t do without. Trying out different functions on a calculator will further your understanding and help with building a bigger mental picture. It builds links between numbers and algebra. It is important to try alternative calculations or approaches, to sketch & label angles, tracking changes to units of measure, visualizing to cross-link the concepts of angles and numbers.