Angle α lies in quadrant II , and tanα=−125 . Angle β lies in quadrant IV , and cosβ=35 .

What is the exact value of cos(α−β) ?

Step-by-step explanation:

step 1

Find cos α

we know that

we have

substitute

Remember that Angle α lies in quadrant II

so

sec α is negative

Find the value of cos α

so

step 2

Find sin α

we know that

we have

substitute

step 3

Find sin β

we know that

we have

substitute

Remember that

Angle β lies in quadrant IV

so

sin β is negative

step 4

Find cos(α−β)

we know that

we have

substitute the given values

b 1: 45 am

step-by-step explanation:

its that because if it was in the pm it would be 1345

0.6, 3/5, and 6% are the 3 same portion.

but, when they're all changed to a decimal they would equal to 0.6.

hope this , good luck!