if sin² teta =1/2 then find the value of cos² teta
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Step-by-step explanation:
sin² theta=1/2
cos² theta=1-sin² theta
cos² theta=1-1/2
cos² theta=2-1/2
cos² theta=1/2
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Answer:
sin² theta =1/2
:.sin theta = 1/
:.sin 45° = 1/
:.theta = 45°
:.cos² theta = cos² 45°
:.cos² 45°=( 1/ )²
:.cos² 45°=1/2
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