if sin2a+sin3a=x and cos2a+cos3a=y then cos a=?
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1
Answer:
Step-by-step explanation:
sin3A+sin2A= cos2a+cos3a
2sin(A+3A)/2*cos(3A-A)/2+sin2A=sinB
2sin2A*cosA+sin2A=sinB-----(1) Similarly in case of cos
2cos2A*cosA+cos2A=cosB------(2) Dividing 1&2
Sin2A(cosA+1)/cos2A(cosA+1)=sinB/cosB
tan2A=tan B
2A=B
Answered by
2
Answer:-----------
Step-by-step explanation:sorry iam still 8th class i dont know
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