What is the amplitude of
h
(
x
)
=
7
sin
⁡
(
3
π
4
x
−
π
4
)
+
6
h(x)=7sin(
4
3π

x−
4
π

)+6h, left parenthesis, x, right parenthesis, equals, 7, sine, left parenthesis, start fraction, 3, pi, divided by, 4, end fraction, x, minus, start fraction, pi, divided by, 4, end fraction, right parenthesis, plus, 6?

7

Step-by-step explanation:

Amplitude is the positive multiple of sin(theta) which is 7 here.

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answer: cos [   arcsin (3/5) - arccos (1/2) ] =

step-by-step explanation: × = 3/5 = 0.6--> x = 36.87 and x = 180 - 36.87 = 143.13 deg

cos y = 1/2 --> y = +- 60 deg a. cos (x - y) = cos (143.13 - 60) = cos 83,13  

=

0.12

b. cos (36.87 - 60) = cos (-23.23) = 0.92