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Start learning 50% faster. Sign in now(sinx + siny) = a (both sides squaring). a2 =sin2x +sin2y +2sinx.siny … (1) (cosx + cosy) = b (both sides squaring). b2 =cos2x +cos2y+2cosx.cosy … (2) Now EQ (1) +EQ (2) … (sin2x +sin2y +2sinx.siny) + cos2x +cos2y+2cosx.cosy =a2+b2 =1+1+2(sinx. siny+cosx. cosy) = a2+b2 2(sinx. siny+cosx. Cosy) = a2+b2-2 sinx. siny+cosx. Cosy = (a2+b2-2)/2.
Which of the following weed causes Dropsy disease in humans?
Kinnow is a cross between
Match List I with List II
White rust in mustard is caused by:
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