The value of sin 23° cos 67° + cos 23° sin 67° is
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Answered by
7
Answer:
Step-by-step explanation:
cos 23 . sin 67 - sin 23 . cos 67
by applying identity
sin a = cos 90- a
sin 23 cos (90-23) - cos23 . sin ( 90-67)
sin 23 sin 23 - cod 23. cos 23
sin^sq 23. - cod^sq 23
( sin2 a - cos2a =1)
1-1
=0
hope it help
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Answered by
20
Answer:
Sin 23° cos 67° + cos 23° sin67°
=sin23° cos(90°-23°) + cos 23° sin(90°-23°)
=sin23° sin23°+cos23° cos23°
=sin^2 23°+cos^2 23°
=1
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