An acute angle is any angle that is below 90 degrees, so 89 degrees is an ancute angle
Answer:
be rewritten as a square of a sum
Step-by-step explanation:
Answer:
cos 42 = 10 / AB
Step-by-step explanation:
Since this is a right angle, we can use trig functions
cos theta = adjacent / hypotenuse
cos 42 = 10 / AB