find the value of cos(-1170°)
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Answered by
1
Answer:
Step-by-step explanation:
cos ( - 1170° )
= cos ( 1170° ) ( ∵ cos ( - θ ) = cos θ )
= cos [ 3 × 360° + 90° ]
= cos 90° (∵ cos (360° + θ ) = cos θ )
= 0 is the answer.
Answered by
1
Answer:
the value of cos(-1170°) is 0
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