Question

Can someone explain the process of getting to Angle A? I know the answer is 44.1 but I need to show my work so can someone show me the process of getting the answer and please explain! Thank you!!

Answer 1

Explanation:

First you have to calculate CB in order to use sin law to calculate ∠A

CB=
`\sqrt{18.4^(2) -13.2^(2) }`

CB=12.8(correct to nearest tenth)

After that, use sin law to calculate ∠A,

`(18.4)/(sin90) =(12.8)/(sinA)` or
`(sin90)/(18.4) =(sinA)/(12.8)`

sinA=0.695...

A=44.079...

=44.1(corrext to the nearest tenth)

Is that clear enough for you?