Which of the following expressions is equal to -1? sec90° sin180° csc270°
1 answer:
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Answer:
Step-by-step explanation:
Angle EFB = 180 - 147 = 33 (Angles on a straight line add up to 180 degrees)
Angle FEB = 180 - 4x (Angles on a straight line add up to 180 degrees)
Since the angles in a triangle add up to 180 degrees ,
Remove brackets:
Add/Subtract:
Subtract 213 from both sides:
Divide both sides by -3:
Answer: x = 1
Step-by-step explanation:
Step 1: Cross-multiply.
x/8 = 8/64
x*(64)=(8)*(8)
64x=64
Step 2: Divide both sides by 64.
64x/64 = 64/64
Therefor, the answer is x = 1
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