Answer: 3/8
Step-by-step explanation: Multiply 3/4 and 1/2, or , which equals 3/8
2. Helen can type 120 words in 4 minutes. How many words can she type
2 answers:
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Answer:
<h3>-cos10°</h3>Step-by-step explanation:
cos is positive at first and fourth quadrant
so, cos (-x) = cos (x)
also, cos(180-x) = -cos x
cos (180+x) = -cos x
cos (-170°) = cos (170°)
cos(170°) = cos (180° - 10°)
= - cos 10°
