Let the two sides of a right triangle be equal to one, which means that the hypotenuse is √2
Since cosa=adjacent side / hypotenuse
cos45=1/√2
We can rationalize the denominator by multiplying numerator and denominator by √2
√(2)/2
or if you prefer: √(1/2)
Multiply 190 by 0.27 and you should get your answer
The answer is 48.5, did a question similar to this on a quiz and got it right
Answer:
cos beta = 3 /5 ............
4x-2y-5 that is the answer if you are combining like terms
