For which acute angle are the sine of the angle and cosine of the angle equal? a. 30º b. 45º c. 60º d. 75º

B 45º

Step-by-step explanation:

If the sine and cosine are the same, the angles would need to be the same.  In an isosceles triangle, the angles are the same and therefore the sine and cosine would also be the same.

b. 1.25 hr

step-by-step explanation:

if you have a constant speed of 60 mph, then you have a ratio between 60 mi. to 1 hr. dividing both sides by 60 we get the ratio

1 mi. to

then mult. both sides by 75 we get the ratio

75 mi. to

simplifying we get

75 mi. to

or 1.25 hr.