Find the exact value of the expressions cosine left parenthesis alpha plus beta right parenthesiscos(α+β), sine left parenthesis alpha plus beta right parenthesissin(α+β) and tangent left parenthesis alpha plus beta right parenthesistan(α+β) under the following conditions: cosine left parenthesis alpha right parenthesis equals startfraction 12 over 13 endfractioncos(α)= 12 13, alphaα lies in quadrant iv, and sine left parenthesis beta right parenthesis equals startfraction negative 6 over 13 endfractionsin(β)= −6 13, betaβ lies in quadrant iii. what is tangent (alpha +beta)i need to find answer to tan(alpha + beta) when sin (alpha+beta) =5square root 133 - 72/169 and cos(alpha+beta) = -12square root 133 + 30/169. cos 12/13 quad 4; sin -6/13 quad 3

Step-by-step explanation:

If , lies in quadrant IV, and :

Since lies in quadrant IV, the value of   is negative so .

If , lies in quadrant III, and :

lies in quadrant III,  the value of is negative so .

The formula for the of two angles:

For

C.SIN (3pi/4)

Step-by-step explanation:

EDG 2020

final total: 63

step-by-step explanation:

60 times sales tax

60 times 0.05

3

60 + 3

63

answer:

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1. we have to maintain check register with exactness to avoid checks being returned for insufficient funds which is called bouncing a check.

2. we need to update our check register each time we make a transaction using a convenience card. updating check register will   save   us from   overdrawing of checking account.

3. read the agreement the bank gave you when you signed up for our checking account. this includes all the fees and the minimum balance we need to keep in our account to avoid maintenance charges.  

explanation:

note : -   checking account is a transactional deposit account. we can use it to deposit and withdraw funds. money in a checking account is very liquid. it   can be withdrawn using electronic debits, automated cash machines, or checks among other methods.