Mathematics
Grade9
Easy

Question

Solve for x. Round to the nearest tenth.

  1. 13.7
  2. 18.2
  3. 12.4
  4. 14.0

hintHint:

cos space theta equals fraction numerator b a s e over denominator h y p o t e n u s e end fraction

The correct answer is: 12.4


    cos space 18 equals x over 13
equals greater than x equals cos space 18 cross times 13
equals greater than x equals 0.951 cross times 13
equals greater than x equals 12.363
equals greater than x equals 12.4 space a f t e r space r o u n d i n g space o f f

    Know when to use which trigonometric function and learn the trigonometric functions.

    Related Questions to study

    Grade9
    Mathematics

    Solve for x. Round to the nearest tenth.

    Know when to use which trigonometric function.

    Solve for x. Round to the nearest tenth.

    MathematicsGrade9

    Know when to use which trigonometric function.

    Grade9
    Mathematics

    Solve for x. Round to the nearest tenth.

    Know which trigonometric ratio to use.

    Solve for x. Round to the nearest tenth.

    MathematicsGrade9

    Know which trigonometric ratio to use.

    Grade9
    Mathematics

    Solve for x. Round to the nearest tenth.

    Remember the formulae of the trigonometric functions by heart.

    Solve for x. Round to the nearest tenth.

    MathematicsGrade9

    Remember the formulae of the trigonometric functions by heart.

    parallel
    Grade9
    Mathematics

    Choose the correct ratio.

    Know the trigonometric functions by heart.

    Choose the correct ratio.

    MathematicsGrade9

    Know the trigonometric functions by heart.

    Grade9
    Mathematics

    You need a ladder that will reach up a 25-foot-tall house when placed 10 feet away from the house. How tall does the ladder need to be?

    Remember pythagoras theorem formula.

    You need a ladder that will reach up a 25-foot-tall house when placed 10 feet away from the house. How tall does the ladder need to be?

    MathematicsGrade9

    Remember pythagoras theorem formula.

    Grade9
    Mathematics

    Solve for x. Round to the nearest tenth.

    Identify the base and hypotenuse for solving the problem.

    Solve for x. Round to the nearest tenth.

    MathematicsGrade9

    Identify the base and hypotenuse for solving the problem.

    parallel
    Grade9
    Mathematics

    Solve for the missing distance.

    Know how  to find the perpendicular ,hypotenuse and base for the respective angle

    Solve for the missing distance.

    MathematicsGrade9

    Know how  to find the perpendicular ,hypotenuse and base for the respective angle

    Grade9
    Mathematics

    To find a missing angle when given two sides, you must use ______.

    Know each one of these trigonometric functions.

    To find a missing angle when given two sides, you must use ______.

    MathematicsGrade9

    Know each one of these trigonometric functions.

    Grade9
    Mathematics

    Find y.

    For such questions, we should know about the properties of a right-angled triangle and 30°-60°-90° triangle. The alternate way to solve the above question is by Pythagoras theorem and trigonometric ratios.

    Find y.

    MathematicsGrade9

    For such questions, we should know about the properties of a right-angled triangle and 30°-60°-90° triangle. The alternate way to solve the above question is by Pythagoras theorem and trigonometric ratios.

    parallel
    Grade9
    Mathematics

    Find a.

    For such questions, we should know about the properties of a right-angled triangle and 30°-60°-90° triangle. The alternate way to solve the above question is by Pythagoras theorem and trigonometric ratios.

    Find a.

    MathematicsGrade9

    For such questions, we should know about the properties of a right-angled triangle and 30°-60°-90° triangle. The alternate way to solve the above question is by Pythagoras theorem and trigonometric ratios.

    Grade9
    Mathematics

    If you are given the SHORT LEG of a 30-60-90 triangle, select the way to find the LONG LEG?

    For such questions, we should know the properties of different triangles.

    If you are given the SHORT LEG of a 30-60-90 triangle, select the way to find the LONG LEG?

    MathematicsGrade9

    For such questions, we should know the properties of different triangles.

    Grade9
    Mathematics

    If you are given the SHORT LEG of a 30-60-90 triangle, choose correct way to find the HYPOTENUSE.

    For such questions, we should know the properties of different triangles

    If you are given the SHORT LEG of a 30-60-90 triangle, choose correct way to find the HYPOTENUSE.

    MathematicsGrade9

    For such questions, we should know the properties of different triangles

    parallel
    Grade9
    Mathematics

    Identify the type of triangle shown bellow.

    For such questions, we should know the properties of a triangle.

    Identify the type of triangle shown bellow.

    MathematicsGrade9

    For such questions, we should know the properties of a triangle.

    Grade9
    Mathematics

    If the leg of a 45-45-90 triangle is 7 cm long, then its hypotenuse is _____ cm.

    For such questions, we should know the properties of different triangles.

    If the leg of a 45-45-90 triangle is 7 cm long, then its hypotenuse is _____ cm.

    MathematicsGrade9

    For such questions, we should know the properties of different triangles.

    Grade9
    Mathematics

    Find the lengths of the other two sides of a right triangle if the length of the hypotenuse is 4√2 inches and one of the angles is 45.

    For such questions, we should know the properties of different triangles.

    Find the lengths of the other two sides of a right triangle if the length of the hypotenuse is 4√2 inches and one of the angles is 45.

    MathematicsGrade9

    For such questions, we should know the properties of different triangles.

    parallel

    card img

    With Turito Academy.

    card img

    With Turito Foundation.

    card img

    Get an Expert Advice From Turito.

    Turito Academy

    card img

    With Turito Academy.

    Test Prep

    card img

    With Turito Foundation.