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19.06.2021 •
Mathematics
URGENT: If θ is a second-quadrant angle and cosθ = -2/3, then tanθ = _____.
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Ответ:
In the second quadrant, both cos and tan are negative while only sin is positive.
To find tan, we will use the following property below:
Sec is the reciprocal of cos. If cos is a/b then sec is b/a. Since cos is 2/3 then sec is 3/2
Since tan is negative in the second quadrant. Hence,
Answer
tan = -√5/2Ответ:
The answer is 22
Step-by-step explanation:
firstly 30-18 =22