If 2sin-ß - cos-B = 2, then ß (a) 0 (b) 90° (c) 45° (d) 30
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Answer:
b
Step-by-step explanation:
2sinB-cosB... 1eq
B=90
B ka man put 1eq se
2sin90-cos90
sin90=1
cos90=0
2x1-0= 2 ans.
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