Question

Check the attached image.

Spot the mistake done [ By using Property 4 ] ! Correct answer is pi/2.

It can also be done by using trigonometric formula. But solve by using property 4.​

Answer 1

Answer:

plzzz give me brainliest ans and plzzzz follow me please

Answer 2

$\huge\mathfrak\pink{ThankYou !!}$