Question

>
8
en evaluate (1)
(1 + cos 0) (1 -- cosy)
In a right angled triangle ABC, right angle is at B. If tan A= 13, then find the value of
M
름성
(ii) cos A cos C-sin A sin C
(i) sin A cos C + cos A sin C
w​

Answer 1

Answer:

Given that

tanA=13AC=(3)2+12=3+1=4=2

now

(i)sinAcosC+cosAsinC=23×23+21×21=43+41=44=1

and 

(ii)cosAcosC−sinAsinC=21×23−21×

Step-by-step explanation:

Hope it helps you

Mark as brainliest