ecartwright1206 ecartwright1206

13-01-2021
Mathematics

contestada

evaluate sinB given that sinA=-1, a=10 and b=4

Respuesta :

oladayoademosu oladayoademosu

18-01-2021

Answer:

-2.5

Step-by-step explanation:

Using the sine rule, a/sinA = b/sinB.

So, sinB = bsinA/a

substituting sinA = -1, a = 10 and b = 4, we have

sinB = 10 × (-1)/4

= -10/4

= -5/2

= -2.5

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