find the cosine ratio of angle θ. hint: use the slash symbol ( / ) to represent the fraction bar, and enter the fraction with no spaces.

triangle abc is shown. ab measures 4. bc measures 5. ca measures 3. the angle formed at point c is marked theta and angle a is the right angle.

answer for blank 1:

The cosine of the angle theta is given as:

cos θ=3/5

Step-by-step explanation:

We know that cosine of any angle theta is defined as:

Where theta is the angle formed with whose respect we apply the trignometric identity. ( As we are given an right angled triangle so we can easily apply our trignometric identity)

Now here we have base=CA=3

and hypotenuse=BC=5.

Hence, cos θ=3/5

Also the figure of the question is attached to the answer.

answer: was that a question or answer?

step-by-step explanation:

(sin 42)/31. = sinx)/37

sinx = 37 (sin42)/31

= 37× 0.66/31 = 0.787

x= 51.9

other angle opposite to y = 180-51.9-42

= 180- 93.9 =86.1

so

sin42)/31 = sin 86.1)/y

0.021 = 0.997 /y

y= 0.997/0.021 =47.47