Answer:
Step-by-step explanation
We have given that equation of line a+4b=0
⇒4b= -a
⇒
slope of line =
⇒ is negative therefore it lies into 4th quadrant
By, Pythagoras theorem
by putting value of P= -1 & B=4
the value of
with the given condition
i.e. ∈ (3π/2, 2π)
now,
we know that
In the right triangle ABC
∠∠
------> by complementary angles
so
Step
Find the measure of angle B
we know that
in this problem
so
Step
Find the measure of angle A
therefore
the answer is the option
35.5° and 54.5°
Answer:
13. Sin<A = 77.3°
14. Tan<A = 77.3°
15. Cos<A = 77.3°
Step-by-step explanation:
<em>From</em><em> </em><em>Trigonometry</em><em>.</em>
13.
Sin<A =
40÷41
<A = sin-1 (40÷41)
<u><A = 77.3°</u>
14.
Tan<A= (40÷9)
<A = tan-1 (40÷9)
<u><A = 77.3°</u>
15.
Cos<A = (9÷41)
<A = cos-1 (9÷41)
<u><A = 77.3°</u>