Find the cosine of angle p

Question

asked Sep 28, 2020 103k views

1 Answer

Victorvartan · Answer 1 · 2020-10-03T17:07:05+0000

Answer: last option

Explanation:

You need to remember the identity:

$cos\alpha=(adjacent)/(hypotenuse)$

You need to find the cosine of angle P, then, you can identify in the figure that:

$adjacent=PR=21\\hypotenuse=PQ=29\\\alpha=P$

Therefore, the next step is substitute these values into
$cos\alpha=(adjacent)/(hypotenuse)$ , then you get:

cos(P)=(21)/(29)

You can observe that this matches with the last option.