Solve sin 20 = COS CE-30)
2 answers:
Answer:
CE = 100
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Step-by-step explanation:
Answer:
CE = 100°
Step-by-step explanation:
Using the cofunction identity
sin x = cos(90 - x)
Given x = 20°, then 90° - 20° = 70° thus
CE - 30 = 70° ( add 30 to both sides )
CE = 100°
Thus
sin20° = cos(100 - 30)° = cos70°
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Step-by-step explanation:
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