Question
If sinθ = 3/5 and θ is an acute angle, find cos
θ.Solution
ATQ, sin²θ + cos²θ = 1 (3/5)² + cos²θ = 1 9/25 + cos²θ = 1 cos²θ = 16/25 cosθ = 4/5
A student was supposed to find 2/9 of a number, but he mistakenly found 7/9 of it. His answer came out 150 more than the correct answer. What is the num...
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- Find the median of the following observations:
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27 percent of a number exceeds 13 percent of the same number by 56. What is the value of the number?
When a number is reduced by 25%, the resulting value is 36 more than 60% of the number's initial value. What is the original number?
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Find the remainder when 3¹²⁵ is divided by 13.
The sum of four consecutive even numbers is 108. What is the sum of the squares of these numbers?
How many times I write digit ‘1’ in first hundred natural numbers?
