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rvc (rvc):
hey please help me
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rvc (rvc):
OpenStudy (anonymous):
Hello there. Let us go for the first picture. Part (a):|dw:1447266979206:dw| and |dw:1447270967139:dw| From my perception, the theta is the same for both cases and you can solve simultaneous equations using cosine rule. That is:\[6\cos \theta=4\cos \theta \] Making theta the subjecct, you get 90degrees.
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