सिद्ध करो कि sin30°cos60° + cos30°sin60° = 1
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Answered by
0
Answer:
As you know
sin 30°= 1/2
cos 60°= 1/2
cos 30°=sin 60°= √3/2
So now putting all these things in the question
1/2×1/2+✓3/2×✓3/2=1/4+3/4=4/4=1
Hence proved
Answered by
1
Step-by-step explanation:
first change the cos60 into sin 30 (cos 90 -30)..and sin 60 into cos 30 (sin 90-30)...and multiply sin 30 with sin 30 and cos 30 with cos 30 ..u will get sin 30 sq +cos 30 sq and that is equals to 1
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