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Evaluate: and plixxx tell it to me sin 25° cos 65° + cos 25° sin 65° Evaluate: and plixxx tell it to me sin 25° cos 65° + cos 25° sin 65°
Dear Studentsin 25° cos 65° + cos 25° sin 65°To simplify this,convert some of the sin functions into cos functions and cos function into sin function and it becomes,= sin(90°-25°) cos 65° + cos (90°-65°) sin 65°= cos 65° cos 65° + sin 65° sin 65°= cos^2 65° + sin^2 65°since sin^2 A + cos^2 A = 1= 1Therefore,sin 25° cos 65° + cos 25° sin 65° = 1The answer would be 1Thanks
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