Answer:
Step-by-step explanation:
The given trigonometric identity is .
Jana has to recall that, the cosine function is an even function.
For that matter, .
Jana has to apply this property by substituting for in the given identity to obtain,
.
Note that, the sine and the tangent functions are odd functions
1 1/2 divided by 1 1/6 equals 1.28571429
Rounded: 1.28, 1.29, or 1.30 (depends on what they ask for)
3/4 divided by 1 3/8 equals 0.54545455
Rounded: 0.54 or 0.55
OK so 1st you need to do 42 times .15 = 6.3 then you need to subtract that number from 42 which is 35.7 so that is your answer! I hope it helps :)
