answer it immediately
Asked by pankajkumarsingh25 | 8th Feb, 2010, 01:36: PM
7sinA + 11cosA = 89
This equation is IMPOSSIBLE, because sinA or cos A can take a maximum value of 1, and that too not simultaneously.
Although some tricks to help solve the problem are,
sin4A+sin2A+cos2A+cos4A = sin2Acos2A(sin2A+cos2A) = sin2Acos2A
Given an equation line psinA + qcosA = r
Write, psinA = r-qcosA.
Square both sides, to get a quadratic equation in cos A.
Find cos A, then sinA
Please provide addition details and clarification, to give you complete solution.
Answered by | 13th Feb, 2010, 10:24: PM
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