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Class 9 FRANK Solutions Maths Chapter 27 - Trigonometrical Ratios of Standard Angles

Complete your revision more effectively with Frank Solutions for ICSE Class 9 Mathematics Chapter 27 Trigonometrical ratios of standard angles. Check out the answers by experts to understand how they have provided proofs or presented an evaluation of trigonometric ratios given in the Frank textbook questions. The expert solutions on TopperLearning can be accessed 24x7 online.

In addition, the Frank solutions for Chapter 27 also provide elaborate answers on finding the angle or side of a triangle using trigonometry. To further revise this ICSE Class 9 Maths chapter or chapters from other syllabus, take a look at our Selina textbook solutions, doubts and solutions, solved question papers, and other useful resources.

Trigonometrical Ratios of Standard Angles Exercise Ex. 27.2

2

Solution 4

Construction: Draw DP AB and CM AB

Solution 10(a)

Construction: Draw BX AE

Then, BD = EX = 14 cm and BX = ED

AX = AE - EX = 16 - 14 = 2

Solution 17

Consider the following figure,

Solution 19

Consider the following figure,

Solution 21

Draw QM RS.

Clearly, RQM = 30°