Select the angle that correctly completes the law of cosines for this triangle

Option 'B'

Step-by-step explanation:

The law of cosines states that given a triangle with sides a, b, c, then:

where 'y' is the opposite angle to the side 'c'.

In this case, given that the equation is: we can clearly see that c=15, and the opposite angle to 'c' is 62 degrees.

The correct option is Option 'B'

ANSWER

B. 62°

EXPLANATION

The cosine rule is given by:

where A is the angle that is direct opposite to the side length which is 'a' units.

The given relation is:

The missing angle should be the angle directly opposite to the side length measuring 15 units.

From the diagram the missing angle is 62°

after simplifying it i got: -36.25 as my answer. hope that !

$450 is the answer.

step-by-step explanation:

30% of 450 = 135

450-135=315