4 years ago

Evaluate 2 sin square 30 degree tan 60 degree - 3 cos square 60 degree sec square 30 degree

Mathematics

1 answer:

WARRIOR [948]4 years ago

8 0

Answer:

(√3)/2 -1 ≈ -0.133974596

Step-by-step explanation:

2sin²(30°)tan(60°) -3cos²(60°)sec²(30°)

= 2(1/2)²(√3) -3(1/2)²(2/√3)²

= 2(1/4)√3 -3(1/4)(4/3)

= (√3)/2 -1 ≈ -0.133974596

You might be interested in

Please help with complete answers!!! I just wanna get this done at this point.

lilavasa [31]

Area of a triangle : 1/2 (length x breadth)
: 1/2 (3 x 4)
: 1/2 of 12
: 6. including units it would be 6m^2 (6 metres squared)
hope I helped

6 0

4 years ago

What is 15 of 60? please answer

sashaice [31]

The answer would be Nine.

8 0

4 years ago

Read 2 more answers

92 is 24 percent of what ?

maw [93]

Answer:

383.333333333333... or 383 $\frac{1}{3}$

Step-by-step explanation:

Note: Using a calculator is best.

1. Divide 100 by 24, you get 4.166666667

2. Multiply 92 by 4.16666667

3. You get 383.33333333333

4. You can check by multiplying this by 0.24, you'll get 92.

6 0

3 years ago

A twelve inch candle and an 18 inch candle are lit at 6 pm. The 12 inch candle burns 0.5 inches every hour. The 18 inch candle b

schepotkina [342]

Answer:

The candles will be the same height at 10 pm.

Step by step explanation:

12 - 0.5x = 18 - 2x

12 + 1.5h = 18

1.5h = 6

h = 4

4 hours

4 hours after 6 pm. is 10pm.

3 0

3 years ago

Read 2 more answers

A dozen apples cost$4.92 for a dozen apples is a ratio of what per Apple

serg [7]

Answer:

12 : 4.92

Step-by-step explanation:

a= apples

12a=4.92

12 : 4.92

3 0

3 years ago