Two angles are supplementary. One angle is twenty less than four times the other angle. Find the measure of the larger angle. 180°
140°
130°
40°​

If tan2a=cot(a+60), find the value of a, where 2a is an acute angle

Answer asap and if you do you will get brainliest. catherine buys a gallon of ice cream from the store. after taking it home, she eats a fifth of a gallon of ice cream. her sister eats some of the ice cream as well. if two-thirds of the original amount of ice cream is left, then what fraction of a gallon of ice cream did her sister eat?

Solve the equation for b: a= (1/2)(b)(h)