MATHEMATICS PROBLEM SOLVER

It is a site for parents, students and teachers. This site can help O-LEVEL or GCSE secondary school students in mastering mathematics subject. It intends to involve the learners by making them follow up the examples before they can do questions on their own at the TRY THIS.... section. There are some videos, tests, quizzes and past examination questions. Learning the examples will ultimately give students the required confidence in solving various questions in mathematics.

Monday, 16 January 2017

COORDINATE GEOMETRY 1A

If x-15⁰ and 4x + 35⁰ are complementary angles, find the value of x.

solution

Complementary angles add up to 90⁰.

so, x-15⁰ + 4x + 35⁰ = 90⁰.

x + 4x + 35⁰ - 15⁰ = 90⁰.

5x + 20⁰ = 90⁰.

5x = 90⁰ - 20⁰

5x = 70⁰

5x = 70¹⁴

5 5

Hence x = 14

TRY THIS...............

If 3x - 22⁰ and 2x + 87⁰ are complementary angles, find the value of x.

MATHEMATICS PROBLEM SOLVER

Monday, 16 January 2017

COORDINATE GEOMETRY 1A

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