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Irfan

· started a discussion

· 1 Months ago

Syntax error (Question: 300385.0 )

alpha, beta and a and b

Question:

If cos (θ –  α   ) = a, cos(θ – β) = b, then sin2( α    – β) + 2ab cos( α    – β) equals to —

Options:
A)

\(\alpha\)2 + \(\beta \)2

B)

\(\beta\)2 – \(\alpha\)2

C)

\(\alpha\)2 – \(\beta\)2

D)

–(\(\alpha\)2 + \(\beta\)2)

Solution:

Ans: (a)

  

Knowledge Expert

· commented

· 1 Months ago

Dear Student,

We fixed it.

Keep learning with us!
Best wishes
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