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1.	sin 35° x cos 55° + cos 35° x sin 55°
Answer» sin 35°. cos 55° + cos 35°.sin 55° = sin (35° + 55°) (\(\because\) sin A. cos B + cos A . sin B = sin(A + B)) = sin (90°) = 1

sin 35° x cos 55° + cos 35° x sin 55°

Answer»

sin 35°. cos 55° + cos 35°.sin 55°

= sin (35° + 55°) (\(\because\) sin A. cos B + cos A . sin B = sin(A + B))

= sin (90°)

= 1

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