Answer:
150˚ or 330˚
Step-by-step explanation:
It is easier to use the calculator, but you can use the unit circle too.
Calculator:
Plug in the equation without the negative, and you get 30˚ which is your reference angle. But since tangent is negative, the angle is in either the second quadrant, or the fourth (because tangent is negative in these quadrants). Now using your reference angle, you can find the answer.
Answer:
(-7)*(-8)
Step-by-step explanation:
Two negatives make a postive so 7*8=56 and 4*6=24.
Answer:
1. Kite,
2. Kite.
Step-by-step explanation:
1. The quadrilateral form will have 2 equal pairs of adjacent sides which is a kite.
2. Find the slope and length of the sides:-
slopes (9-6)/ 0-3) = -1
(6-1) / (3-0) = 5/3
(6-1) / (-3-0) = -5/3
(9-6)/(3) = 1
Lengths = sqrt(9 + 9) = sqrt18
sqrt(25 + 9) = sqrt34
sqrt (25 + 9) = sqrt34
sqrt (9 + 9) = sqrt18.
This is another kite.
Answer:
a) Surface area = 616 cm²
b) Volume = V = 1083 cm³
Step-by-step explanation:
Surface area and volume of a regular triangular pyramid that has a base edge of 16 cm and a slant height of 15 cm
a) Formula for surface area = Base area × 1/2(perimeter × slant height)
Base area = Base edge²
=( 16 cm)² = 256 cm²
Perimeter = Base edge × 3
= 16 cm × 3 = 48 cm
Hence:
Surface Area = 256 cm² + 1/2(48 × 15)
= 256 cm² + 360 cm²
= 616 cm²
b) Volume = 1/3 × Base area × Height
1082.758616785cm³
Approximately = 1083 cm³
Answer:
35x + 15
Step-by-step explanation:
5x(7 + 3)
35x + 15
