cos -7pi/2 please answer it
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cos(-7π/2) = 0.
Given:
cos(-7π/2)
To Find:
The value of cos(-7π/2)
Solution:
cos(-7π/2)
cos(-θ) = cosθ
⇒ cos(-7π/2) = cos (7π/2)
= cos( 4π - π/2)
= cos(π/2)
= 0
Therefore, The value of cos(-7π/2) is zero.
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