Answer:
Sin 90°=1
Step-by-step explanation:
A unit circle is a circle with a radius of 1 .Because the radius is 1, it is possible to directly measure the sine, cosine and tangent.
<em>using the unit circle where 90° is the limit as the hypotenuse approaches the vertical y-axis which is positive.</em>
Sine=opposite/hypotenuse
Sin=O/H
<u>Applying the limits</u>
Sine 90°=1/1= 1
cos 90° =0/1 =0
or
When the angle formed at the origin of the unit circle in the 1st quadrant is 0°, cos 0°=1 sin0°=0 and tan 0°=0
When we increase the angle until it is 90°, cos 90°=0, sin 90°=1 and tan 90°=undefined
I used a little trig, the opposite and adjacent were being used so I used tan... I used it to find h and then plugged it in the a=bh
Answer:
s = 4
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Given Number of shirts bought by Jamal in Massachusetts =4.The question is asking us to find the money spent by Jamal after paying sales tax at the rate of 5% when cost of each shirt is $16.
Cost of 1 shirt= $16
Cost of 4 shirts = 4x16=$64.
Sales tax on the shirts = 5% =0.05(in decimal form)
Sales tax on 4 shirts costing $64= 0.05x64= $3.2
Cost of shirt including sales tax= 64+3.2=67.2
Jamal spend $67.2 on purchasing the shirts.
The answer is 35.
50%, another way of saying half, of 70 is 35.
