y=sin²x-20cosx+1 find maximum and value of this expression.
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1
Answer:
2
Step-by-step explanation:
max value of sin and cos function ranges between 1 and -1
so put x = 90°
sin function will become 1
cos (90)= 0
so expression becomes 1 -20(0)+1
=1+1
= 2
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