<span><span>Step 1: Write down the decimal divided by 1, like this: <span>decimal/1</span></span><span>Step 2: Multiply both top and bottom by 10 for every number after the decimal point. (For example, if there are two numbers after the decimal point, then use 100, if there are three then use 1000, etc.)</span><span>Step 3: Simplify (or reduce) the fraction . ( Did That Help ? ) </span></span>
Hello,
cos 160°=-q
cos 20°=-cos 160°=q
sin 20°=√(1-q²)=sin 160°
tan -20°=tan 160=√(1-q²)/-q
cos 70°=sin 20°=√(1-q²)
Yes! You’re on the right track! You followed it perfectly!
Parentheses
Exponent
Multiplication
Division
Addition
Subtraction
Well done!
