Which of the following equals cos 80° ? A. sin 100° B. sin 20° C. sin 10° D. sin 80°
1 answer:
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Answer:
x = -2
Step-by-step explanation:
Given :
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Cross multiplying the terms :
⇒ 8 (x + 4) = -16 (x + 1)
⇒ 8x + 32 = -16x - 16
⇒ 24x = -48
⇒ x = -2