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Trigonometry (Basic)
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Trigonometry (Basic)
All Questions (Page: 15)
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All Questions (PDF)
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Study Material (PDF)
All Questions (PDF)
Self Assesment
Sort As
Serial Number
Newly Added
Language
English
Bengali
Click on each question to see answer & solution.
Question No: #141
যদি `\sqrt{2} cos( \alpha - \beta) = 1` এবং `\alpha + \beta = \pi/2` হয়, তবে `\alpha` ও `\beta` এর মান নির্ণয় করো।
Ans: `\alpha = 67.5^\circ, \beta = 22.5^\circ`
SEE SOLUTION
Question No: #142
`sin 51^\circ = \frac{a}{\sqrt{a^2+b^2}}` হলে, `tan 39^\circ` এর মান নির্ণয় করো।
Ans: `b/a`
SEE SOLUTION
Question No: #143
যদি `sin 17^\circ = x/y` হয়, তবে দেখাও যে, `sec 17^\circ - sin 73^\circ = \frac{x^2}{y\sqrt{y^2-x^2}}` ।
Ans:
SEE SOLUTION
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