the y-intercept is the y -value of the point at which the graph of a function crosses the y-axis True or False
1 answer:
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Answer:
see explanation
Step-by-step explanation:
Using the exact values of the trigonometric ratios
sin60° = , cos60° =
sin45° = cos45° =
Using the sine ratio on the right triangle on the left
sin60° = =
=
Cross- multiply
2a = 4 ×
= 12 ( divide both sides by 2 )
a = 6
Using the cosine ratio on the same right triangle
cos60° = =
=
Cross- multiply
2c = 4 ( divide both sides by 2 )
c = 2
------------------------------------------------------------------------------------------
Using the sine/cosine ratios on the right triangle on the right
sin45° = =
=
Cross- multiply
b = 6
cos45° = =
=
Cross- multiply
d = 6
( divide both sides by
)
d = 6
------------------------------------------------------------------------------------------------
a = 6, b = 6, c = 2
, d = 6