TRIGONOMETRY LECTURE 5

LECTURE-1

Write the following sets in roster form: (i) A = {x : x is an integer and 3 (ii) B = {x : x is a natural number less than 6} (iii) C = {x: x is a two digit natural number such that the sum of its digits is 1 (iv) D = {x : x is a prime number which is divisor of 60} (v) E = The set of all letters in the word TRIGONOMETRY (vi) F = The set of all letters in the word BETTER

In Fig. 5.47, the value of cosvarphi is (FIGURE) 5/4 (b) 5/3 (c) 3/5 (d) 4/5

The position of the top corner of the lecture room was required. To find this a theodolite was set up as in the figure below. The distance to the side wall, along the x-axis is 7 m, and following angles were measured AOX = 60^(@), AOY= 45^(@) Calculate the coordinates of the corner realtive to the position of theodolite.

There are 5 doors to a lecture room. Two are red and the others are green. In how many ways can a lecturer enter the room and leave the room from different colored doors?

Application Of Trigonometry Class 10 | CBSE Class 10 Height And Distance

Class 10 Maths Ex 9.1 examples (Part 2) Ch 9 Some Applications of Trigonometry (Heights & Distances)

8 protons and 8 lectures are separately at rest. How much energy will be released if we form _^16O_8 nucleus? Given: Mass of _^16O_8 atom = 15.994915u Mass of neutron =1.008665u Mass of hydrogen atom = 1.007825u

Avinash works as a lecturer and earns Rs. 12000 per month. His wife who is a doctor earns Rs. 15000 per month. Find the following ratios: Avinash’s income to the income of his wife. Avinash’s income to their total income.

Red light I(lambda = 664 nm in vacuum) is used in Young's experiment with the slits separated by a distance from the screen given by D = 2.75 m. Find the distance y on the screen between the central bright fringe and the third-order bright fringe. Reasoning: This problem can be solved by the first using Eq. (i) to determine the value of theta that locates the third-order bright fringe. Then, trigonometry can be used to obatin the distance y.