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a. Cos x = sin (90° – x)
Hence sin (90° – x) = sin (5x – 10°)
90° – x = 5x + 10°
6x= 80°
X= 13.33°
b. Tan x = Tan 13.33°
X= 0.2369
joseph rimiru answered the question on October 2, 2017 at 07:59
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