Which expression is equivalent to cos (π = Θ)?
answer choices:
a. - cos Θ
b. cos Θ
c. - sin Θ
d. sin Θ
e8q8
Update:sorry
is SHOULD be - not =
More Questions From This User See All
answer choices:
a. - cos Θ
b. cos Θ
c. - sin Θ
d. sin Θ
e8q8
Update:sorry
is SHOULD be - not =
Copyright © 2024 1QUIZZ.COM - All rights reserved.
Answers & Comments
Verified answer
cos (π - Θ) = - cos Θ
Edit:
cos (π - Θ) =
cosπ cosΘ + sinπ sinΘ =
- cos Θ + 0 =
- cos Θ
Hi kb, some typo. It has to be cos (Ï - Î).
Ï- Î means the angle is in SECOND quadrant. So only sine function is +ve.
As this is cosine function it becomes negative
More over Ï would keep the function the same
So final answer has to be - cos Î
Hence option a is right one.
try again