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natulia [17]
3 years ago
13

What is the value of x? sin(x+21)°=cos(2x+21)°

Mathematics
1 answer:
qaws [65]3 years ago
6 0
We know that
if sin A=cos B
then
angle A and angle B are complementary angles
so
A+B=90°

in this problem
(x+21)+<span>(2x+21)=90-------> 3x+42=90-------> 3x=48-----> x=16</span>°
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Someone please tell me the answers to this please I beg you
Wittaler [7]
1) 216
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7 0
3 years ago
Witch expression represents a number 5 times the difference of 6 and 2
nikklg [1K]

Answer:

i think it is 20

Step-by-step explanation:

6-2=4

4×5=20

6 0
3 years ago
A basketball player that shoots 80% from the free throw line attempts two free throws. The notation for conditional probability
taurus [48]

Answer:

P(made 2nd attempt|made 1st attempt)=P(made 2nd attempt)

Step-by-step explanation:

Here given that a basketball player that shoots 80% from the free throw line attempts two free throws.

If x is the no of shoots he makes (say) then we find that each throw is independent of the other.

In other words, because he made successful first attempt, his chances for second attempt will not change

Prob for success in each attempt remains the same as 0.80

Hence I throw is independent of II throw.

When A and B are independent,then we have

P(A/B) = P(A)

Hence answer is

P(made 2nd attempt|made 1st attempt)=P(made 2nd attempt)


8 0
3 years ago
Find the missing measurements.<br><br> Area: ?<br><br> Length: 13 cm<br><br> Width: 15 cm
Shalnov [3]

Answer:

13 x 15 = 195

4 0
3 years ago
A clothing pattern calls for 4.81 yd2 of fabric. How many square inches of fabric does the pattern use?
Vera_Pavlovna [14]
Total square inches of fabric. 
To answer this question you need to know how many square inches makes up one square yard.

1296 square inches makes one square yard. 

Therefore total square inches =
1296x4.81= 6233.76 square inches
4 0
3 years ago
Read 2 more answers
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