If cos A - 4-5- cos B - 12-13- 3 -2 - A- B- 2 - find the values of the following-i cos A - Bii sin A - B

A and B both lie in the IV quadrant.= gt; sinA, sinB are negative cosA=45= gt; sinA= 35 cosB=1213= gt; sinB= 513 (i) cos(A+B)=cosA.cos ...

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Cos(A+B)Cos(A-B)

If cos A = ...

Question

If cos A = $\frac{4}{5}$ , cos B = $\frac{12}{13}$ , $\frac{3 π}{2} < A, B < 2 π$ , find the values of the following.
(i) cos (A + B)
(ii) sin (A - B)

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Similar questions

cos A = \frac{4}{5}, cos B = \frac{12}{13}, \frac{3 π}{2} < A, B < 2 π

cos (A + B)

sin (A - B)

{sin}^{- 1} \frac{3}{5} + {cos}^{- 1} \frac{12}{13} = {cos}^{- 1} \frac{a}{b}

a + b

0 < A < 90^{0} : 0 < B < 90^{0}; sin A = \frac{12}{13}

cos B = \frac{4}{5}

sin (A + B)

sin A = \frac{4}{5}, \frac{π}{2} < A < π

cos B = \frac{5}{13}, \frac{3 π}{2} < B < 2 π

sin (A + B)

cos (A - B)

tan (A - B)

{sin}^{- 1} (\frac{3}{5}) + {sin}^{- 1} (\frac{8}{17}) = {cos}^{- 1} (\frac{a}{b})

a

b

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