Prove that
tan720° - cos 270°- sin 150°cos 120° = 1/4
Answers
Answered by
66
Tan 720 = Tan(360 + 360)
= Tan 360
= 0.
cos 270 = cos(180 + 90)
= -cos90
= 0.
sin150 = sin(90 + 60)
= cos 60
= 1/2.
cos 120 = cos(180 - 60)
= -cos 60
= -1/2.
Now,
Tan 720 - cos 270 - sin 150 * cos 120
Hope this helps!
= Tan 360
= 0.
cos 270 = cos(180 + 90)
= -cos90
= 0.
sin150 = sin(90 + 60)
= cos 60
= 1/2.
cos 120 = cos(180 - 60)
= -cos 60
= -1/2.
Now,
Tan 720 - cos 270 - sin 150 * cos 120
Hope this helps!
siddhartharao77:
:-))
Answered by
16
Answer:
RHS=LHS proof below.
Step-by-step explanation:
Given :
To find : Prove that the given expression is equal?
Solution :
We know,
Substitute all the values in the given expression LHS,
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