can u solve this...fast. IAM not getting tan4x...I got cotx
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Answer:
tan4x
Step-by-step explanation:
(sin5x + sin3x)/cos5x + cos3x
∴ [SinA + sinB = 2 sin(A + B)/2 cos(A - B)/2]
∴ [cosA + cosB = 2 cos(A + B)/2 cos(A - B)/2]
=> [2 sin(5x + 3x)/2 cos(5x - 3x)/2]/2 cos(5x + 3x)/2 cos(5x - 3x)/2]
=> [2 sin 4x cos x]/[2 cos 4x cos x]
=> 2 sin 4x/2 cos 4x
=> tan 4x
#Hope my answer helped you!
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Answer:
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