+ sin
23. If O is an acute angle and sin 0 = cos e, find the value of 2 tan-
o - 1.
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20-Dec-2019 · If θ is an acute angle and sin θ=cosθ, find the value of 2tan2θ+sin2θ−1. ... θ =45o. Therefore, 2tanθ+sin2θ−1=2tan45o+sin 245o−1 ... A=cos60sin240cos720
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