8. Introduction to Trigonometry
easy

$\sin 67^{\circ}+\cos 75^{\circ}$ ને $0^{\circ}$ અને $45^{\circ}$ વચ્ચેના માપવાળા ખૂણાના ત્રિકોણમિતીય ગુણોત્તર તરીકે દર્શાવો.

Option A
Option B
Option C
Option D

Solution

$\sin 67^{\circ}+\cos 75^{\circ}$

$=\sin \left(90^{\circ}-23^{\circ}\right)+\cos \left(90^{\circ}-15^{\circ}\right)$

$=\cos 23^{\circ}+\sin 15^{\circ}$

Standard 10
Mathematics

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