Answer:
?
Step-by-step explanation:
Try this solution:
according to the rule sin(90-y)=cos(y), it is possible to re-write the given equation:
sin(90-y)=cos53°, where 90-y=x.
Then substituting the value y=53° into the equation 90-y=x, it is possible to find the 'x': 90-53=37°.
answer: 37°
On 5, the answer would be Area equals base plus base squared divided by two times by height I believe.