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secondary 3 | E Maths
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I dont know how to solve 8b because the opposite length of the angle i am solving i dont know how to calculate
Please help me!
Date Posted: 6 years ago
Views: 291
Use cosine rule, you know 3 lengths and 1 angle to find...
The formula is
(A)^2 = (B)^2 + (C)^2 -2 (B)(C)(cos a)
CB^2=(CA)^2 + (AB)^2 -2 (CA)(AB)(cos CAB)
Sub the respective values in and work backwords.
(A)^2 = (B)^2 + (C)^2 -2 (B)(C)(cos a)
CB^2=(CA)^2 + (AB)^2 -2 (CA)(AB)(cos CAB)
Sub the respective values in and work backwords.
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done
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clear
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Can use sine rule
Date Posted:
6 years ago
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