Question
From a point on the ground, the angle of elevation to
the top of a building is 30 degrees. If the distance between the point and the base of the building is 50 meters, find the height of the building (use √3 = 1.732).Solution
Let the height of the building be h. Using tan 30 degrees = h/50 and tan 30 degrees = 1/√3 = 1/1.732, h = 50 * (1/√3) = 50 * 0.577 = 28.87 m. Correct Answer: b) 28.87 m
Whitening of hair is caused by the deficiency of _________.
Which of these statements are accurate regarding the molecular structures of DNA and RNA?
Statements:
1. DNA is a doublestranded molecul...
What are the tiny pores on the surface of plant leaves called?
During photosynthesis, green plants absorb:
What is the scientific study of animal behavior known as?
Human African trypanosomiasis, also known as sleeping sickness, is caused by which of the following?
The AIDS virus has which type of genetic material?
Lymph attacks harmful ________ in the blood.
Rinderpest, also known as cattle plague, is caused by which type of pathogen?
Which antibiotic was discovered by Alexander Fleming in 1928
