27. Solve the following equation for A0º < A < 90°):
(1) 2cos2A = 1
tan3A = 1 1 (iii) V3cot2A = 1
4cos2 A-1 = 0
(iv)
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some of your questions are missing,pls resend them
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Answer:
2cos2A=1
cos2A=1/2
coz2A=cos60
2A=60
A=60/2
A=30.
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