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sumanta Panigrahi

· started a discussion

· 1 Months ago

Any alternative (Question: 190237.0 )

Can we solve it in other short cut method (value putting) ?

Question:
If a cos \(\theta\) + b sin \(\theta\) = c, then find the value of a sin \(\theta\) – b cos \(\theta\).   
Options:
A)

\(\pm\ \sqrt{a^2 + b^2 - c^2}\)

B)  \(\pm\ \sqrt{a^2 - b^2 + c^2}\)
C) \(\pm\ \sqrt{a^2 - b^2 - c^2}\)
D) \(\pm\ \sqrt{a^2 + b^2 + c^2}\)
Solution:

Ans: (a)

sushant barla

· commented

· 1 Months ago

i think we have a shortcut for this, in this type of questions, just assume any value for @(theta) and match the option given .

Knowledge Expert

· commented

· 1 Months ago

Its just formula, which has been derived....
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