Question

If 3 tan A - 5 cos B = 13 and B = 90°,
find the value of A.​

Answer 1

Answer:

hello frnd and your answer is as follows......

Step-by-step explanation:

as it is given that B = 90° therefore,

cosB = cos 90° = 0

Now, 3 tanA - 5 cosB = 13

---> 3 tanA - 5×0 = 13

---> 3 tanA - 0 = 13

---> 3 tanA = 13

---> tanA = 13/3

thus,

$a = tan {}^{ - 1} ( \frac{13}{3} )$

hope it may helps u.....☺