Question

Subtract:

$35°40\text{'}$ from $60°$

Answer 1

Step 1: Subtract minutes

Here we cannot subtract $40\text{'}$ from $0\text{'}$, so we take $1°$ from $60°$

$1°-40\text{'}=60\text{'}-40\text{'}=20\text{'}$

Step 2: Subtract degrees

$(60°-1°)-35°=59°-35°=24°$

Hence, the required angle is $24°20\text{'}$.