Question

11. Simplify the following
) cos 100°cos 40° + sin 100'. sin 40°
(ii)
cot 55° cot 35° - 1
cot 55° + cot35
TC
tan
TT
+0
4
tan
-0
(iv) tan 75° + cot 75
TO
4
(v) sin 1140° cos 390º – cos 780° sin 750°
2. Express
( 13 cos 25° + sin 25°)
as a sine of an angle.
2​

Answer 1

Answer:

Refer to attachment ❤️

Answer 2

Step-by-step explanation:

This is the answer..

Mark me as brainlist please..