Asked by patience morakile
                if 5cos A plus 3=0 and 180<A<360..without using a calculator and with the aid of a diagram,determine the value of 1.1 sinA plus cosA        1.2 tanA *sinA
            
            
        Answers
                    Answered by
            Steve
            
    5cosA+3 = 0 means that
cosA = -3/5
So, A is in QIII
sinA = y/r = -4/5
sinA+cosA = -4/5 + -3/5 = -7/5
tanA*sinA = 4/3 * -4/5 = -16/15
    
cosA = -3/5
So, A is in QIII
sinA = y/r = -4/5
sinA+cosA = -4/5 + -3/5 = -7/5
tanA*sinA = 4/3 * -4/5 = -16/15
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