alleryStart learning →tan(45°) equals:
- ∞
- 0
- 1
- √3
Show answer and solution
Correct answer: C. 1
We have tan(45°) = sin(45°)/cos(45°).
That is tan(45°) = (1/√2)/(1/√2).
So tan(45°) = 1.
Indian Navy SSR (Sailor) Algebra — practice questions
Explore 66 free Algebra questions in Indian Navy SSR (Sailor) Mathematics. Open each question or exercise to read its content, reference answers and available explanation.
Practise Algebra with Quill →Algebra questions and exercises with answers
Showing questions 1–30 of 66.
tan(45°) equals:Read the answer and worked solution →The distance between two points $P(x_1,y_1)$ and $Q(x_2,y_2)$ is:Read the answer and worked solution →The angle 90° in radians is:Read the answer and worked solution →The function f(x) = tan x has vertical asymptotes at:Read the answer and worked solution →Match each kind of matrix to its conditionRead the answer and worked solution →Sort each matrix by its shapeRead the answer and worked solution →Tap every matrix that must be squareRead the answer and worked solution →Complete the definition of a matrixRead the answer and worked solution →When is a product defined?Read the answer and worked solution →True or false: transposesRead the answer and worked solution →Symmetric or skew symmetric?Read the answer and worked solution →True or false: matrix algebraRead the answer and worked solution →Complete the equality conditionRead the answer and worked solution →Order the steps: is AB defined, and what order is it?Read the answer and worked solution →Spot the one that does not belongRead the answer and worked solution →Special square matricesRead the answer and worked solution →Assertion and reasonRead the answer and worked solution →Two are true, one is notRead the answer and worked solution →Three of these are wrong. Find the one that holds.Read the answer and worked solution →Tap every statement true of the identity matrixRead the answer and worked solution →Flip and pair: notation with meaningRead the answer and worked solution →True or false: inversesRead the answer and worked solution →Complete the scalar multiplication rulesRead the answer and worked solution →Which operation needs matching orders?Read the answer and worked solution →Spot the odd one outRead the answer and worked solution →Reading the definitions backRead the answer and worked solution →Assertion and reason: structureRead the answer and worked solution →Order the steps: test whether A is symmetricRead the answer and worked solution →True or false: orders and shapesRead the answer and worked solution →Complete the arc length relationRead the answer and worked solution →
Worked practice questions
The distance between two points $P(x_1,y_1)$ and $Q(x_2,y_2)$ is:
- $\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$
- $(x_2-x_1)^2+(y_2-y_1)^2$
- $\sqrt{(x_2+x_1)^2+(y_2+y_1)^2}$
- $\sqrt{(x_2-x_1)^2-(y_2-y_1)^2}$
Show answer and solution
Correct answer: A. $\sqrt{(x_2-x_1)^2+(y_2-y_1)^2}$
Distance formula: √[(x₂−x₁)²+(y₂−y₁)²].
The angle 90° in radians is:
- $\pi$ (full half-circle)
- $2\pi$ (full circle)
- $\pi/2$ (quarter circle)
- $\pi/4$ (one eighth)
Show answer and solution
Correct answer: C. $\pi/2$ (quarter circle)
180° = π radians.
So 90° = π/2 radians.
Quarter of a full circle (2π).
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