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loll9416
19.01.2021 •
Mathematics
The hypotenuse of a 30 – 60 – 90 triangle is 20 inches. The area of the triangle is
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Ответ:
If sin y = 7/q and tan y= 7/r then the value of cos y is \frac{r}{q}
Step-by-step explanation:
Solution:
The values of sin y and tan y are given as 7/q and 7/r respectively.
We know the relationship between tan cos and sin which is
--- equation 1
Since we already know the values of sin y and tan y we can easily find the value of cos y by substituting the values in eq1
Taking cos y to the other side of the equal to sign we get
Hence the value of cos y is \frac{r}{q}