3 years ago

Solve sin 20 = COS CE-30)

Mathematics

2 answers:

SpyIntel [72]3 years ago

7 0

Answer:

CE = 100

Step-by-step explanation:

jeka943 years ago

5 0

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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Solve sin 20 = COS CE-30)​

Solve sin 20 = COS CE-30)