Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities

2cos2A + 1 = 2sin3A, A + B = 90° എന്നിവയാണെങ്കിൽ, cosB യുടെ മൂല്യം കണ്ടെത്തുക.

1

1/2

2

1

3

0

4

1/√2

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