14. If cos 0 + sin 0 = 2 cos 0, prove that cos0 -sin0
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Answer:
given cos0+sin0=2cos0
Step-by-step explanation:
sin0=2cos0_cos0
sin0=cos0(2_1)
sin0= cos0×1
sin0= cos0
bring sin0 to RHS side
cos0_sin0
hence proved
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