Question

trigonometry please help me​

Answer 1

Answer:

87/25=3.48

Step-by-step explanation:

$\tan(x) = 1 \frac{1}{3}$

=> tan x = 4/3

=> tanx = h/b = 4/3

then,

h = 4a

b = 3a

we know that,

p^2= h^2 + b^2

= 16a^2 + 9a^2

= 25a^2

=> p = 5a

then,

sin x = h/p = 4a/5a= 4/5

cos x = b/p = 3/5

then,

4sin^2x - 3cos^2x +2

= 4(16/25) - 3(9/25) +2

= 64/25 - 27/25 +2

= 37/25 +2

= (37+50)/25

= 87/25

=87/25 = 3.48