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If sin A+sin B=alpha\ a n d\ cos A+cos B...

If `sin A+sin B=alpha\ a n d\ cos A+cos B=beta,` then write the value of `tan((A+B)/2)dot`

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RD SHARMA ENGLISH-TRANSFORMATION FORMULAE-All Questions
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  3. If sin A+sin B=alpha\ a n d\ cos A+cos B=beta, then write the value of...

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  4. If cos A=m cos B , then write the value of cot((A+B)/2)cot((A-B)/2dot)

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  5. Write the value of the expression (1-4sin1 0^0sin7 0^0)/(2sin1 0^0)

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  6. If A+B=pi/3a n dcosA+cos B=1, then find the value of cos((A-B)/2dot)

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  8. If sin2A=lambdasin2B , then write the value of (lambda+1)/(lambda-1) .

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  9. Write the value of (sin A+sin3A)/(cos A+cos3A) .

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