Math, asked by ameerakhan9049, 4 months ago

Cos (90 +x) x tan(540 +x) x cos(180 - x) + sin(-90)

Answers

Answered by jeemitvpandya
0

Answer:

apply reduction formula and complement angles of sin and cos

=

cos

x

.

(

cos

x

)

+

sin

x

cos

x

.

cos

x

.

(

sin

x

)

=

cos

2

x

sin

2

x

, then use square identity

=

1

Similar questions